You’d be surprised. Check AliExpress. There are aftermarket units built to fit perfectly into every dumb auto fascia they’ve come up with to prevent it. A simple harness adapted is usually sufficient to restore steering wheel controls etc.
I’ve heard of a couple of vehicles where you simply cannot replace the media centre because it doubles as climate control input etc but the simple answer is: refuse to buy those vehicles.
It’s shit like this that makes me want to never use another Google app or service.
What possible justification is there for storing history of calculations in a calculator app?