I didn't watch the video yet but the quote you referenced doesn't mention any fork. He is basically saying there's no threat at all to Bitcoin. You can only hurt yourself by stubbornly sticking with a fork that has no support.
He seems to indicate that he has faith that the only way for XT to actually reach 75% consensus if it is truly the best solution. He has complete confidence in the consensus model and I am with him. I don't think 75% consensus will ever arrive at a solution that is bad for bitcoin. (this is also why I don't think XT will get 75% consensus, I am hoping for a block size increase on Core)