I think there is a divergence of expectations.
Government didn't tell schools to deliver the curriculum, to run live lessons, to mark work......in fact they didn't really give guidance about what should be provided.
But parents expect as close to the school experience as possible and often don't appreciate the barriers to delivering it to the school population and only really think about their individual children.
The complaints then seem to come about 'teachers' rather than the government approach and discussed endlessly but not nearly so often communicate directly to the school in a specific way.
Teachers generally don't decide what they will deliver at this time. They don't choose. They are told by the management of their school and the management spend a lot of time trying to work out what very limited government information means.
So really the complaints and discussion aren't actually about 'teachers' but that is how they are voiced and why the people who actually are teachers are then demoralised and depressed.
Just wait until the 'return' happens after half term in its many many different formats. Then people really will complain about 'teachers' because they imagined a return to some kind of normal at school but the reality won't be that at all.....al they will hear that some other school down the road is doing it differently and it sounds better so they will complain about 'teachers' and some will decide that he remote learning provided by 'teachers' was somehow better.
It's not normal amd it won't be for a long time. There isn't a definition of what 'good teaching' or 'outstanding teaching' is right now. Government has deliberately not been very specific because it will be im possible for all schools to deliver the same into their different situations. But who do people discuss and blame - it's 'teachers' - not usually a specific named teacher in a specific school, but a complaint or discussion about 'teachers'
It starts to feel like comments about Blacks or Jews or Gays - targetted at a wider group.