For me a post deserving to be reported as trash is usually bloody obvious: things like thinly disguised clickbait ads/referrals, wildly off-topic, etc.
I never thought about that alone - my criterion would strictly be on thread derailing post, post made in the wrong section and 'em falsified cookie-cutter post. Seems everyone has a different lookout and that pretty fair.
As of late the number of obviously AI generated posting and plagiarism is on the rise no doubt because ChatGPT makes it so easy to ask a question and then post its answer as if the poster came up with it instead of DYOR,
There's also a way to counterbalance the whole situation and eliminate AI posters.. Although the latter might be arduous! Matter of fact, lovesmay, nutilda, jolly good and the rest aren't relinquishing at all; my worst fears would be unlocked the moment the forum becomes unreadable.