I , for example, at the moment, don't have an iphone to go with my atv4 (i do have an ipad, though)
Well, ok, not EVERYone who owns an ATV4 will also own an iPhone, but I think that's a pretty small minority of users who Apple is willing to marginalize slightly in the name of improving the gaming experience for everyone else. And assuming that the new Remote app will at least work iPads, then the only ppl Apple will be alienating are ATV4 owners with no other iOS devices AND no third-party MFi controller.