I currently have a Tesla (no CarPlay) and a Volvo EV with a reasonably good CarPlay implementation. I was in the same position as the writer until I experienced great in-vehicle software that I think only Tesla & Rivian can currently offer.

I don't miss CarPlay one bit, and I think a lot of people are brainwashed into thinking it's the only viable option because they've never been exposed to an auto manufacturer who actually knows how to build software ;) The level of software-hardware integration you experience in a Rivian or Tesla is something that CarPlay just can't compete with.

Personally I also don't want Tesla or Rivian to add CarPlay, because the reality is that it's not only additive. If Tesla & Rivian don't continue to nudge their buyers toward their native in-vehicle software CarPlay will continue to dominate simply because people will default to using what they are comfortable with. That will inevitably drive decisions by Tesla & Rivian about where and how they should invest in the in-vehicle experience.

If you want CarPlay, there are plenty of legacy auto manufacturers out there who can give it to you.