I don’t think I would buy a car that didn’t have CarPlay. I’m an iPhone user and have no interest in changing my phone. People reject cars all the time for even more trivial things (oh — this one doesn’t have wireless charging? Next.), so I can’t imagine this being a smart idea for GM.
The reactions in this thread are interesting, because they seem to imply that this is the final straw that has convinced us to not buy Chevrolets and Buicks, as opposed to the last 30+ years of of their products being generally terrible.
First they kill the Volt -- IMHO the best PHEV on the market when I bought it -- now they kill a vastly superior interface to anything I've ever used in a car.
Sorry GM, you might just have lost a (stockholding, for now, at least) customer.