As someone who spent their formative years primarily interacting with teachers I think I can say that I do. Most teachers underperform, so even if you have a hard time, just assuming that one is not a good one will have you right more often than not.

The few teachers I had that left a lasting impression on me I value greatly, I wish more teachers were like that. And that's a teachers job, isn't it? Without a lasting impression most of what was learned is lost, so then it's not really teaching, just busywork.

I will say that there are probably a good number of teachers with the drive just beaten out of them by the bureaucracy. When you go into your profession to educate and you spend more time dealing with authorities, paperwork and silly requirements, that has a tendency to drag your performance down. The flip side of that though is ofc that that bureaucracy was largely created by teachers, probably the ones who would get fired without it protecting them.