Regardless of whether you prefer Apple or Google, the benefit of phone projection is that you can get a good experience with relatively low specs from the head unit because the heavy lifting is done by the phone which can be upgraded independently of the car. Even powered by Google, the infotainment system is going to age like milk since you’ll be locked into hardware that will be midrange at best, several years old…
In the future, perhaps phones can integrate better with cars and enable that kind of experience, but we aren't there today.