Comments as well. It's exactly the type of commenting they taught us not to do because it was useless. I'm sure it's also a negative to the LLMs as well by polluting the memory with useless info.
I was team / tech lead on the last contract gig I had, and I had a policy in writing that people should write their own commit messages and PR descriptions. For this reason and others.
... And follow conventional commit format. Linear commits. Rebasing / fast-forward, no merge commits. Etc. etc.
Nobody paid any attention. The git history was next to useless. Bisecting would be completely impossible. People were mostly just pumping and dumping. I could have drawn a hard red line but the founder was the worst for it.
Git commits and PR descriptions? Those are probably best at least edited/tuned by humans. Because they're meant to be read by humans.