My experience as well. I have never heard a teacher complain about their jobs - Not that there aren’t some who are unhappy. Of course there are. But they are pretty good at keeping up the public face. The pandemic has been rough, for sure, but the vague complaints I have heard have been directed at the pandemic messing with how they do their job and how much they are missing the kids, not directed at the school or the kids. I don’t have insider information though. It wouldn’t surprise me that there is more grousing about helicopter parents than there used to be.
I do think schools have to contend with diversity and gender issues in a way they never had to before, and that might be harder in some schools and for some teachers than others.