Sprint retro is with your own team. And disagreement isn't a problem, at least then there would be the potential to come to a common understanding between the GP comment and their coworkers.

I usually require to file an issue in bug tracker about problem in #3 and then follow all its updates to prevent silent closing by management. It won't help but annoys management a lot and they afraid to get more backlog issues of such sort from me in the future.

Seems to me if technical decisions on the level of "no more AI comments" go through management the organization doesn't know what they are doing.

To be fair, I would not be surprised.