I think the Bitcoin Cash window of opportunity has already been and gone. It has no media attention. It's just another alt. No one beyond the BTC echo chamber has any interest in it and they're the ones who'll drive adoption, not the people inside it.
In time Mr Wu and Mr Ver will become historical footnotes.
As long as Jihan Wu supports it and Roger Ver still has his ardent followers, bitcoincash still has a chance to get the center stage. Do I think that it will overthrow bitcoin? No, but it will get enough attention and a fast growing market cap to make us think that a flippening might happen.
I reckon their goal is a threat of a flippening, not the flippening itself.