So I'll try to put this as nicely but firmly as I can: I think you (like a lot of Redditors in these kinds of threads) aren't looking forward-enough, and have made the fundamental mistake of only considering the current problem set of common tasks in front of you, rather than the future problem set.

That is, in a sense, you don't understand why OEMs aren't skating to the puck and are instead going off in a different direction, not realizing they are skating towards where the puck will be.

Let me elaborate:

There is no situation, literally not a single one where using on-device (car) applications or software is better than carplay. I will die on this hill passionately.

I'll give you a pretty simple example: High-resolution multi-screen interactions. The Chinese-market Li Auto L9 (one of the fastest-selling cars in China) has triple (triple!) 15.7-inch OLED displays with 3K resolution and gesture control. Audio is Dolby Atmos 7.3.4, meaning there are fourteen channels of lossless audio. The whole experience is completely connected, meaning apps and experiences can be 'flung' from one screen to another seamlessly. The car understands contextual gestures, so if you point to a window and say "hey car, close that window" it knows which window you are talking about and will close it.

You cannot power that kind of experience wirelessly — it is not possible with the state of the art, and even if it were, such a thing would quickly burn a hole in your pocket and drain your battery. You'd simply kill your phone. Now, Redditors might hate this kind of screen setup and might scream and shout "but I don't want that!!!!" — but consumers do want that (again, the Li L-Series sells like gangbusters) and this is only the start.

Take note of the Escalade IQ, which GM is packing with a main 55-inch segmented dashboard display, secondary 11.0-inch connected touchscreen for controls and settings, dual tertiary second-row connected 12.6-inch screens, and an AKG Reference 40-speaker 3D audio system.

Huawei's Aito M9 not only has a 12.3-inch instrument panel, a 75-inch 2K resolution heads-up display, a 15.6-inch centre control screen, and a 16-inch passenger entertainment display — but also four additional 10-inch seatback screens for the second and third-row passengers, an additional retractable 32-inch laser projector in the second row, and finally a twenty-five speaker 7.1.4 surround sound audio system. It is one of the fastest-selling new models in China right now, bar none.

You aren't powering this all with CarPlay. It is not happening. You need beefy compute and beefy in-house software just to make it all happen. You have to put all your chips in on the software table, and CarPlay becomes practically vestigial at that point.

I'll give you another example of a situation in which CarPlay not only does not work and is less optimal than a native, but where it is completely non-viable: Projecting a park-assist ADAS mind's-eye visual of the world into your car display. Your phone doesn't have access (and cannot realistically speaking have real-time access) to the dozen or so 8MP+ streams it would need your car to provide over a wireless connection. It won't happen. Apple's solution to this is already a tacit admission of defeat — next-gen CarPlay will simply ask automakers' software to "punch-through" and provide their own UI. Really, that's Apple's own real solution: Ask the carmakers to handle it in their own software. They gave up.

I cannot emphasize it enough: This is the future we're hurtling towards right now. There is no turning back, and it is unlikely CarPlay will play a serious role from here on out as a result. If automakers want to survive, they need to skate to where the puck is going to be, and this is where it is going.