Bitcoin Cash is Bitcoin without the new SegWit code. It's not unproven, in fact it's substantially more proven than what is now called "Bitcoin" which hasn't started to impliment SegWit yet...
There is an attempt to get people to think what is currently called Bitcoin is old bitcoin, and Bitcoin Cash is a new version, so people will sell their Bitcoin Cash thinking it's worthless before finding out it's the other way around. Indeed, there's even an incentive for miners to pretend they support SegWit but actually go back to mining Bitcoin Cash after investing heavily in it themselves. If that happens, miners and community leaders have already said they will start calling Bitcoin Cash "Bitcoin", and Bitcoin "SegWit Bitcoin".
