Not all cars support that, though. Due to licensing or tech, some cars (even new ones) only support Apple car with a cable (my case). I bought a wireless adapter on Amazon and it works seamlessly.
You’re mad that Toyota didn’t include an extra WiFi radio in your car, so that you can be more conveniently distracted by text messages and speed trap warnings, in the same thread where everyone else thinks that electric starters ruined cars forever?
Carplay lets me use the car to control audio with the car controls instead of the phone. That’s a big non-distractor. Your comment tells me that you have never actually used CarPlay (and perhaps that Android Auto is not so good—I wouldn’t know, I always assumed it was roughly equivalent to CarPlay in features and functionality). My phone doesn’t notify me about text messages when I’m driving and with the Prius, if I want navigation, CarPlay is the thing. Having the nav on the big display instead of the little display (which would be well out of the normal peripheral line of sight if it’s sitting on the wireless charger) is again an improvement in safety.
I hope I never meet a Toyota engineer in person, because it would be hard not to do something criminal to them.