Even in the aforementioned thread there's responses from over a week ago that came out as AI generated text with 98% certainty, and the mods still did not remove it.
I think mods are in a quite difficult situation when they evaluate AI reports. First things first, there is no rule which prohibits the use of AI. So, reporting it and using "AI" as excuse, does not satisfy the conditions for deletion. Only if the post is completely meaningless, it'd be removed, but that's because being "completely meaningless" is against the rules. So, if someone used accurate AI responses, I'm not entirely sure what a mod should do.
Should there be more mobilization of users in that regard? Perhaps start giving neg trust to those abusing AI to make posts... Or we just don't care about it anymore?
If it's totally apparent, then yes. Any account which is essentially run by a chatbot, presented as a human, cannot be trusted.