A good friend of mine admitted that he was a pretty piss-poor teacher on zoom. He is, in the classroom, an excellent teacher, in no small part due to a charismatic persona which slides from serious to amused and from hard to soft with ease. It would be easy to imagine that he's just being tough on himself, but I think he's actually kind of right. He's not great on Zoom. Something about his instincts and his habits don't translate quite right and his inability to sense the physical cues of students distracts and frustrates him.

There is some sort of mismatch there or difficulty in translating teaching persona through the screen.