This is everything that is wrong with "smart" devices. Just give me a normal radio with Bluetooth capabilities, especially if you're unwilling to support something for the reasonable life of your product.
I think the only reason why the car makers switched to carplay/android auto is because they knew they sucked at infotainment systems and software and nobody wanted their bullshit, so they just outsourced it so they wouldn't have to try anymore.
We need to go back to the days of headphone jacks and analog AUX ports. Seriously. Something simple, reliable, and extremely well-understood.
Cars should be a lot more modular, but the market is consumer-hostile in general and it won't happen without regulation. There should probably be some standardized car-infotainment interface, and consumers be required to buy the infotainment system aftermarket to get more competition and quality in that area.