While I think CarPlay is a net positive, I see its value increasing with the age of the vehicle. It’s a good way to still have access to certain internet-dependent features and entertainment even after the auto manufacturer drops support for the vehicle OS or the underlying connectivity standard is sunsetted (as we had with 3G a few years ago).
CarPlay is no substitute for my car’s UI and I see little value in even trying to duplicate all available car system controls and settings, in all permutations of manufacturers, models, trim levels and equipment, within CarPlay. Apple would do better to focus on the phone, messaging, entertainment, media, maps functionality and make that as smooth as possible.