LLMs love https://tvtropes.org/pmwiki/pmwiki.php/Main/SuspiciouslySpec... . You tell them not to do a thing, they make a point of saying they didn't do the thing.
Of course, I quickly reverted this change as purple elephants started cropping up in comments and other prose :)
They just also really love to tell you about it.
I don't understand why negative prompts never made it into the LLM world. If "no foo" and "dont do bat" don't work then just give me a separate textbox where i can put all my negatives!
And btw, if you have slop comments in your PR, you'll get a review from an agent (my company pay for it). I won't bother to read if you didn't bother either.
Ymmv, I also hate it when people dont read their own PR first though. But I know I've previously identified comments as LLM written which the dev... On further discussion definitely wrote themselves. So you gotta keep the false positives in mind.