If you look at the ten commandments in the context of the team all these rules make sense; good coaching.
While I like your team analogy, the 10 commandments are not what you seem to think they are.
The first 4, for example, have nothing at all to do with morality and everything with the jealousy, pettyness and psychological insecurities of Jawhe.
Thou shall not steal, if followed, saves physical and emotional resource and enhance team security and unity. Do you feel better about your neighbors the everyone is honest ro do you feel closer when there are thieves among you?
However, morality isn't black and white like that.
"Lying is wrong" is oftenly stated as if some kind of set in stone thing for example. But like with almost everything, it depends... if it's 1943 and the gestapo asks you were some jewish family is hiding and you know the answer... lying would be the moral thing to do, as telling to truth would be like signing the family's death sentence.
In the news, shoplifting and stealing is rampant in San Fransisco due to Democrats party teaching immorality; relative morality.
Please, leave your political propaganda at the door.
No, the democrats aren't telling anyone to "steal and shoplift", nor do they support such.
Let's be serious.
Relative morality is based on the premise that anyone can be a coach
No. First "relative morality" is pretty much a strawmen. The actual term would be "secular morality" or "humanism" or alike.
And not, it's not based on the premise that "anyone can be / is a coach". It rather is based on the idea that
nobody is a "coach". And no "person"
decides what is moral or not.
Rather, that morality is a conclusion based on
reason.
Something is god/bad
for such and such reason.
Not
because some perceived authority says so.
Morally is based on the premise that only elite coaches can win the championship.
No. That's what "divine command theory" is based on. It's what theistic absolute morality is. Where "god" is the "unquestionable coach".
In secular humanism, there are no coaches - let alone unquestionable ones.
There are instead only reasoned arguments.
The best moral systems are scalable from local to international championships; expanded team spirit; esprits de corp.
Yes. And the best system is underpinned by
reason, not by perceived authorities.