a common comment i read is something like “if <youtuber> was my teacher/professor i would have learned so much better!”

and no, i don’t think so. you would have been entertained, but your teacher was making you learn. ability to explain concepts is important but it’s only the first step on the pathway to learning.

Hmm, I'm not so sure. You may have never had a truly horrible math teacher. I distinctly remember learning matrix multiplication in high school for the first time. We were taught the algorithm without any motivation at all. Not a single picture was drawn, she just did some examples and then passed out a giant worksheet. I didn't learn linear algebra in that class. If Grant Sanderson had taught it I'm sure I would have.