NJ
Sorta my point. With home equipment, broadband and public systems(Skype, for example), I don't think the quality for what I'm suggesting is quite there yet.
As to watching tying videos on YouTube and other media:
I taught fly tying at one time. I brought the students up close and demonstrated the pattern. I then had them tie with notes on each step I gave them.
As I walked around watching them, nearly all had problems with the pattern. Most weren't really following the techniques I showed them. The critique and feedback was more valuable than watching me tie.
If you are already a fairly accomplished tier, the videos may suffice. But if you aren't, or you are trying a technique or material new to you, immediate feedback is very helpful.
As an example, if you watch the ten seconds in this Galloup video from. 7:10 To.7:30 , you will see a tiny technique explained which is quite rare in most videos, but very helpful for a relative beginner. Most videos assume the viewer is already accomplished.
IMO
https://www.youtube.com/watch?v=A0U_TauQbrU