Knowledge is knowledge however acquired, whether from posts, text books, video, lecture, or first hand.
Experience is experience, only one way to gain that.
Live1 shared opinion, knowledge, experience and attitude, no-one is perfect. Just because you don't agree with his opinion, sometimes garnered not thru his own experience but exposure to others relayed experience, doesn't mean he's wrong. His focus is SubC's, so it is possible that he researched exhaustively and shared an educated opinion that did not coincide with your experience/opinion regarding mentioned movements. No harm done, others could counter with their experience or opinion, which leaves you to decide what/whom to believe.
It is my opinion that he was purposely baited into acting out by instigators with bad intentions, and he reacted in bad form, his responsibility, exhibited more than once, but the instigators were not punished as far as I see, could be wrong.
Scrapper,
Rafa