I don't think anyone has purposely been rude or negative, just tried to point out how you can improve your videos and teaching ability.
Maybe not deliberately rude or negative, but some if it came across that way I think. It is difficult in writing to always play the ball and not the man.
As I said above, try to keep criticism to something specific: this content is incorrect; that lighting is poor; too long; too short.
If you hate it utterly, easy, don't engage.