The smart people who once might have found their vocation in teaching, now prefer to set up YouTube channels.
The role of teacher is splitting into content makers and babysitters.
Educational content is amazing, but it's not teaching. It's a resource. It's like saying that the existence of books negates the need for teaching and that all the clever people are now writing books.
Video is a replacement for teacher-centered lectures, that don't do these things either. Of course the tutoring part of education is also important.
(I vaguely remember being shown some educational video in class that was over half old wireframey CGI transitions with what an old person thought technobabble looked like all over it. It was supposed to be about the environment.)
It's a supplemental resource, not core instruction.
Don't try to make it into something it was never intended to be.