Is this even serious?
Secularism is about separation of religion from the state - it doesn't have a set of beliefs about origins.
Re "But you can bring secularism into that class - and all its nihilist, sexual, drug addled baggage."
It's fashionable to generalize our past as being "white supremacist" or "racist" or "patriarchal" etc..
By what standards would our past (ie Western culture over the previous thousand years) judge us?
I hold that secularism is "not connected with religious or spiritual matters." That's Google's definition.
So an example of secular vs religion in my country would be a Catholic Archbishop who was
charged with some offense in Tasmania after he produced a leaflet outlining his church's
position and his bible's interpretation of marriage. This was during the 2018 homosexual
marriage referendum.
So to teach the bible's position on marriage is the new heresy and homosexuality is the new
norm. The secular position is taught and the religious one is not. Maybe some "secularists" prefer
the religious teaching, but generally not.
This secularism has the smell of religion about it, ie value based, zealotry, sinner and saints etc..
Indeed, in posing the "who made the universe?" argument people often tell me, "Science will one
day figure that out." That's Faith.
BTW, in the 1980s the "gay community" of Tasmania claimed their campaign to "decriminalize"
homosexuality would not lead to the practice being taught in schools and would not lead to "gay
marriage." That's MY issue with "progressives" -- the lies. It's about to happen with polygamy.