Eh, if steam saw some of the content as involving a minor and they are sick of dealing with games trying to toe the line before and likely after release I could see them defaulting to a no do overs policy. Especially if the game dev doesn't sell enough games to make the potential legal hassle necessary.
It would be far better if they pointed out what they are using for criteria for sure and allow at least one do over in case of a misunderstanding though.