I do not think I can accept this definition of myth. If a story or narrative is true, then it is not a myth.
Let's use the term mythos then to remove the negative connotations.
Something being broadly true can easily form part of a mythos. We select, curate and frame aspects of the truth to construct a narrative.
For example:
"BLM rioters killed dozens, burned and looted cities and caused billions in damages while ruining the lives of many people from black and minority communities. This does not bode well for the future."
"It was inspirational to see hundreds of thousands of people of all races, the overwhelming majority peaceful and well behaved, coming together to fight the evil of racism and call for social justice and a more tolerant and fair society. This points to a brighter future."
Both of those are more or less true, yet are framed very differently to be fully consistent with opposing ideological systems. We perceive and frame parts of reality and construct narratives that suit our purpose and that of the group we identify with.
There is no neutral observation of reality, how we perceive it is based on the mythos we consciously and implicitly hold.
I would agree that we have inherited many social constructs that were born, based, or justified in myths. That does not mean that we cannot recognize them for what they are, set aside the myth, and treat them as useful social constructs, as agreements between people. Nor does it mean we cannot set them aside entirely, if we choose.
In that same regard, it is perfectly legitimate to recognize the benefits of ethical and moral constructs that were originally intertwined and justified by myth, set aside the myth and still incorporate them as social construct based on the shared perception and agreement of their value and utility. This is what I see being done in the Secular Humanism movement.
The problem is people tend not to recognise the myths they have internalised and are reliant upon
The conceit of the Secular Humanist position is to believe that SH is what you get when you strip away the myths and 'see the world as it is' based on the neutral application of reason. Pithily summed up by Michael Oakeshott as the rationalist 'finds it hard to believe that anyone who thinks honestly and clearly could think differently to himself'.
This was almost the default position among educated irreligious people in the West in the late 20th C: as people get more educated they discard myths and become Western style humanists. This is the inevitable march of progress.
While it was perhaps understandable to hold such a view in the late 20th C, I'd say to hold it today is akin to a creationist holding on to belief in a young earth.
For me, an intellectually honest form of secular humanism would accept it is grounded in numerous cultural contingencies that emerged in a specifically Western Christian context, and stripping away the god bit doesn't negate the reliance on this mythos. This means it is not simply the neutral application of reason that remains when one strips away myth and sees the world as it is.
If they want to create a more secular humanist world, they have to provide a more powerful mythos while accepting they are constructing a narrative to support a subjective preference that only seems 'self-evident' because of their cultural conditioning. Others who have not internalised the myths of Western society will not view the world this way.
Society and culture evolve. We are not bound to the myths and perceptions of our ancient ancestors. Beyond that, not every abstraction we create is to be considered myth, or fictional. The rules and requirements for a sport or a board game are not myth, simply a shared agreement to an abstract construct created by human beings, for human beings, and accepted as such.
In a game you are not competing with others who are trying to impose their own rules on the game and replace yours.
We can grow beyond myth, and it is ok to do so.
A society without myth, were it possible, would be entirely transactional.
Human life is sacred as we are all made in god's image (religious mythos)
We all have inalienable rights based on our common humanity and obligation to make the world better for future generations. (secular mythos)
Human life has no intrinsic value. We simply pretend it does as it is utilitarian. (myth free version)
The only reason anyone would do something would be the rational evaluation of self-interest. Such a society would be fragile and would not endure the inevitable crises that emerge. A purely utilitarian approach only survives as long as people accept its utility in the face of competing narratives.
In addition, we need common narratives to unite diverse people. These may be religion, patriotism, political ideologies, etc. but they can't work as purely utilitarian transactions.
The paragraph above seems to support my position.
Not when you read the next sentence too:
...religion is religion in any era and any place, though it may take different outward forms. A history of the term religion makes this assumption deeply problematic.
Again, this does not matter. What matters is whether the term and its definition work for us today.
The term as used today is based on a Christian view of religion that assumes all societies had something roughly akin to this.
It assumes a secular and a religious divide, again something that developed in a specifically Christian context.
This is the approach taken by colonialists towards indigenous belief systems, it was a square pegs and round holes approach then too that led to many misunderstandings.
For me it's a mistake to view other societies as basically primitive versions of the West which is what we are implicitly doing by assuming our categories neatly map on to theirs.
While the etymology of the word religion is interesting, it is hardly germane to the conversation.
It is more than germane, it is the crux of the issue.
IF historical "religions" don't map neatly on to our view of religion, and that they often contain things we would consider "secular", then it makes it much harder to support the idea that "religion" is somehow intrinsically different to secular belief systems.
Is it culturally insensitive to assume the term god or gods means the same thing in different cultures?
More than being culturally insensitive, it's just wrong. It's pretty clear that gods are very different in different cultures, and it can be hard to identify if some belief systems should be considered theistic or not.
It is reasonable and appropriate to recognize those common elements and group them under an umbrella term, in this case 'religion'.
The problem is we cannot define these "common elements" in a manner that differentiates them from secular beliefs.
Why is it specifically Protestant Christianity and not Catholic Christianity or an Islamic worldview?
Islam wasn't a major influence on the West, and Protestantism is especially responsible for the idea that belief is what matters.
Protestantism is also the primary influence on the Anglophone world, and was a major influence on the development of individualistic Western liberalism (not the only influence though).
What about the term 'theism'. Do you apply all your arguments against defining the term 'religion' as arguments against defining or using the term 'theism'.
It's not an overly useful term, but there are fewer problems with identifying theism and separating it from atheism than there are with identifying religion and separating it from the secular.