Atheist character, dnd coded?

Has anyone ever covered a dnd version of an atheist, I saw a while back that someone got roasted in their group for saying their character didn't believe in the gods which is silly cause we know they're real in universe but what about a character who knows they literally exist but refuses to accept their divinity?

Said character thinks Mystra and Bane etc are just overpowered guys with too much clout and they refuse the concept of "god", they see worshiping as the equivalent of being a Swifty and think gods don't deserve the hype.

Is that a thing that can be played with in dnd or is it believe or nothing?