Not necessarily, no. There’s a different older thread about this long here on MacRumors from when the EV Blazer came out and GM didn’t allow CarPlay or Android Auto. Just like this post, it was full of what sounds like planted GM higher ups trying to talk up a better experience. I had to drop out of that due to what almost seemed like bullying? Was weird.
(GM, or whomever, would need to include the app that allows projection/Lock Screen access for CarPlay or AA. They could easily remove the app, even, with an update later)