CarPlay is probably the top of my list of features when I buy a car. I can careless about performance specs after a certain threshold. But not having CarPlay would straight up go into my do not buy list (yes, I wouldn’t buy a Rivian or tesla either.)
I think this may be the dilemma GM and others are in. Given that it's a must-have, how much can Google and Apple charge the manufacturers for a license? $2000 per car? 5000? More? I dont think you can necessarily criticize GM's decision (and making a public announcement that all other car manufacturers will read) without knowing the upstream costs.