I think this comes down to team culture and morale.

This certainly does happen in a team with a bad culture/morale, but IMO it's just a symptom of the wider issues.

But yep, code reviews do make situations with bad morale worse IMO.

Mediocre code review is a human linter; decent code review catches obvious bugs; good code review catches subtle bugs; great code review teaches you something. I’m always excited to learn (or teach) when there’s a better way to write something. Even if not adopted, the surrounding discussion is a boon to future readers.

If people are giving crazy suggestions, or resenting good ones, something is seriously wrong with your team.