OK well I'm prepared to concede that it matters more whether a post is spam rather than if it was written by AI.
Just seems like cheating, and for the most part they are low-quality posts that don't really add anything substantial to the conversation. At least they are well-written, lol.
Most people using ChatGPT to post on the forum wouldn't be writing anything of quality regardless, pumping out posts that are usually just coherent & on-topic enough to not be deleted as spam.
So basically we're back to where we were before.
Spammers gonna spam, AI or no.