Others may have a different opinion. Maybe I'm not to that level yet, but I could not see me devoting an hour (or 2) a week to watching something like that. I could see me tuning in if there were something specific I were interested in. and skip around the video to get what I wanted out of it.
Maybe if it were more of a talk show with guests or something where there was some general banter going back and forth in between questions that might be worth while.
Now if you cut that down to 20 - 30 mins (or even 15 mins) and have a short focus, like one or two techniques per episode, that might generate a following. Or even a story arc of here is the end goal (for example a world map)
Week one the outline and maybe country outlines, week designating major features (mountains, lakes, maybe laying out some rivers I don't know the full process I'm new) one week could be devoted to actually drawing the mountains and shading. You don't need to make everyone sit through drawing every mountain, do a couple big ones and a couple small ones, maybe a n-s range and an e-w range.
Let people drink from a water fountain, not a garden hose, if that makes sense.
Just some thoughts from a potential viewer.
EDIT:
Or the first half (15 mins) be the tutorial and the second half (15 mins give or take) be Q and A