Because on solo drives, your user experience would be severely diminished. People like CarPlay, Android Auto, and BT BR/EDR profiles. Want to guess the percentage of owners that NEVER pair a primary device in modern cars? It’s almost zero.

Do you want a pat on the back for defeating the imagined safety mechanism? You can also buy seat belt plugs to turn the seat belt chime off. Very few people end up doing this in practice (because it’s stupid).

What is your specific aversion to your car expecting you to separate control of your phone while driving alone? Assume you have HFP, A2DP, and/or CarPlay/Android Auto with voice control. Why do you need physical control of your phone while your car is in gear/moving? You don’t.

to get it to use the car stereo (and screen) instead of the shitty little ones on your phone.