I once heard an interesting point while interviewing Principal Engineer - big PRs for sure might bring troubles and to be very complex to review. But very small PRs are also a signal - in particular scenario from that Engineer - it was actually a sign of some level of toxicity within the team, where they were so constantly throwing review comments that weren't actually helping to make the code better, that irritated devs started doing very atomic PRs thinking "ok now you bastard won't tell me a single word, finally"