Sounds like you got more issues with him than just "bad videos".
Can you provide some examples of wrong rotations or explanations in his videos? Granted I only watch his videos once or twice before doing the fight and I don't come back to it after I cleared that turn so I might be wrong. But I don't recall any grave mistakes and what is in the video generally tends to coincide with the fight in game.
Also would like to see any evidence that he claimed that his method is the "one true method" to do the fight. IIRC, his turn 8 video mentioned that there were many ways to push towers and what was shown in the video was only his group's way of doing it. He also mentioned that he would likely do another video to show a different method, but he never got around to doing it.
As for "omahgerd need to be the first one to post a kill videooooooooo", would like to see some evidence for this, if not its just your personal opinion and you have no idea if he was rushing it or not.
I wonder how many static groups would have been able to clear t6-t9 days/weeks after the content was released if they didn't have his video as a reference. What is undeniable is that he is the first to post end game video guides out there. Even if his methods are "wrong", if it works for him and gets a clean kill, then how wrong can it be? Also, the random/inexact comments make no sense unless you are suggesting he is purposely misleading people for some unfathomable reason.
Now, I also dislike him charging money for twitch, but from what you say the content is still free and accessible and you only need to pay if you wish to talk, which would only apply to die hard fans anyway. I don't see anything wrong with trying to earn a little additional money on the side. Also please don't take it personally as I'm not trying to attack you, but what you say just seems very biased to me as unless you know him in real life, many of your insinuations seem to be very unfair at least from a neutral standpoint (I also don't know him at all).