I'd say a car's core ui, everything from how to wipers work, to brake pedal sensitivity(changed in a few tesla updates?!), should require a manual update, a discussion with a car tech, and a sign off by the customer.

None of this stuff should ever, ever change in an update, without blaring, in your face, clear walkthroughs on the change.

And none of them should be forced, or preclude other updates. EG, by no means, should the control system of a car you paid tens of thousands for, suddenly change post sale.

Consumers first, safety first, cost savings and "cool factor" complete last.