At least for user @Ethan_Crypto, i've reported some of his post and he already got several neutral feedback. But this user haven't been nuked or permanently banned yet. So i agree with @lovesmayfamilis it discourage people from making report and simply add those users to their ignore list.
If I'm not mistaken, his name has already appeared a few times in connection with AI, but BPIP shows that only 10 of his posts have been deleted so far. I think that number needs to be much higher to get a permanent ban, because if my memory serves me right, one member had about 40+ deleted posts, mostly for plagiarism, before he got a permanent ban.
Yeah, he received several accusation of using AI to create spam. I also seen that some spammer need to have lots of their posts deleted before getting permament ban/nuke, which is reason people discouraged from making report.
I tried reporting few of his thread and posts few days ago. While all of them marked good by moderator, it turns out moderator sometimes decide to lock his thread rather than deleting it. So FWIW, actual total post and thread reported and marked good is higher than total of deleted post/thread.