M'rk, son of Mogh wrote:
And money is obviously not a part of that, from everything the characters have always said.
You have a few instances of them mentioning that the Federation doesn't use money, everything else from TOS
to the TNG
pilot to DS9
have mentioned the use of money.
I think it fair to say the "no money" wasn't one of the "weird rules", whether Gene personally believe in the philosophy or not Trek under his watch didn't use it.