You need human alignment on what constitutes a "good" comment. That means consistent rules.

Otherwise, some people feel review is too harsh, other people feel it is not harsh enough. AI does not fix inconsistent expectations.

> But how does one separate the good comments from the bad comments?

If the AI took a valid interpretation of the coding guidelines, it is a legitimate comment. If the AI is being overly pedantic, it is a documentation bug and we change the rules.