I've noticed that if they're new topics with replies beneath the starting post, they're not getting deleted, or at least it's a rarer incident. I've reported a few more of his posts that are clearly AI, and they'll hopefully get deleted.
I've noticed there are generally 3 circumstances when AI posts won't get deleted:
1. Its the first post in the thread and there is already at least a few replies to it.
2. The poster is promoting a coin, token or service, and they used AI to create their marketing materials for them.
3. It is already known the poster is a bot or they expressly acknowledge use of AI ahead of posting.
Seems like the tide is finally turning against AI spammers on the forum, or else I don't visit the places they post in very often.