Not to refute or acknowledge your point, but it makes me think of Those who can - do, those who can't - teach.

While this is at best a very dubious sentiment, I've only really seen it applied to university lecturers. I don't see how it can reasonably be applied to primary/secondary teachers.

Such a disrespectful attitude towards some of the most important people in society. Disgraceful.

Professors teach, are they in that position because of some ineptitude? Of course not, the opposite.

On the whole university professors are terrible teachers. The concept of a professor wasting time giving a lecture to 100 people is surely at an end - far better to find the 1 in 100 professors who are good at teaching to record a lecture and give it to 10,000 people - where those people can pause, play it back as many times as they need, etc

This may surprise you but the reason professors teach is that they’re experts in their fields. Lecturing serves more purposes than simply educating, it allows immediate interaction over the subject matter as it is presented and intended. You are expected to show up at a lecture already knowing the contents, not as if you’re going to the cinema. This though is how people treat it.