Should the car already come with it installed? Yes. Is it a big deal to rectify? No.
I mean, that's absolutely fair - I'm just saying that this is such a trivial issue to fix that it's not even worth worrying about(IMHO).
So, where a car still can collect bonus points is infotainment and interior in general. If you offer some touchscreen-blandness, you have to go down with the price significantly, because I see where money was spared. I use the built-in wireless CarPlay daily, so I expect it to work without occupying myself with fixing Volvo's incompetence.
I'm thankful for whichever Chinese engineers reversed the protocol for CarPlay to make this work. But my experience with these adapters is they are more fiddly than you're describing.
Not really sure why!
And what about switching drivers and quickly switching phones? Or just having the passenger quickly switch to their music.
Every driver (me and my wife) is in the system and car selects the iphone available in the car, but I can also switch it manually if required.
The passengers have in general to stay off my infotainment system, they can do whatever they want in their own car :)
Most car trips are under an hour long, and many phones have batteries that last 18-24 hours.
Personally, I mostly never use a car charger unless my phone missed the wireless charger that night.