Yes, but what if it doesn't? Anyone can create a model or prompt to adjust the tone, remove the tells that people are now on the lookout for, etc.

And it's self-reinforcing, because the people that are on the lookout will always consider themselves to be right in their judgment, also because of survivorship bias - they won't know if they missed an AI generated comment/post unless it's revealed.

This is one reason why I'm in favor of tagging AI generated posts, because at one point we can't tell. If we can't tell, does it still matter? I don't know, but I'd like to know anyway.

Of course, it can't be mandated, so if the submitter doesn't tag it and the readers can't tell the difference, it's futile.