The big picture thing everyone is missing is the multiple things can be true. This whole black or white shit is dumb as fuck. Doc can be a creepy person for exchanging messages with a 17 (or 16? who knows) year old while being a 35+ year old whatever he was at the time married man with a kid...even while the messages themselves weren't really anything alarming by themselves (although potential grooming, possibly/probably...without actual receipts hard to know the full extent). All while Twitch could still have had a group within that did have a bias against him and jumped the gun banning him/terminating his contract. All of these things can be true at the same time. It's not like either Doc or Twitch is the shining example of goodness based on picking one side or the other.
Also the filming while in a bathroom seemed more like camera person just being dumb doing irl streaming not having the awareness to realize once in the bathroom they should not be video taping.
That said, without actual receipts for people to read, he has no leg to stand on other than being legally correct to sue Twitch for their mistakes (which clearly got him paid out pretty damn well), but he shouldn't expect any sponsor ever again. No idea if YT would monetize his channel again.