That's a great point. In fact, the auto industry DID briefly have automatic seatbelts, after new laws were passed requiring increased passive safety, but stopping 1/10 of the way by not requiring seat belt usage laws, or air bag laws. That irritating 'ding' that reminds you to put on your belt comes from this time, as did the near decapitating seatbelts I had on my 1991 Subaru Legacy Station Wagon, possibly the best car I'll ever drive or own, including a Volvo, a Lotus, two Infinitis, a well-loved Explorer, and my current Mazda CX-30, so sweet that my Mom may get one too after the demise of the car her race car neighbor recommended for her 18 years ago. But now, the rules and dings and our kids' reminders, as new generations become indoctrinated, have gotten us used to fastening out seatbelts as part of 'getting in and starting the car.' Hundreds of thousands of lives have been saved by this imposition on our personal liberty, and there were loud and dire complaints all along the way about it. Personally, I'm all for such paternalistic measures in regulation in government, as long as it is done along lines I agree with (smoking unhealthy, seatbelts good, pro-choice. So far, I seem to be getting 2 out of 3 of my wishes). But in this case, the end result of what does appear to be an intentional choice on the part of Apple, is not a matter of life or death, but of music provider. One might argue that iTunes gives a better deal to musicians than other platforms, but I think it would be a spurious argument. For your entertainment, my old car's seatbelt system was the doorframe type:
https://youtu.be/jHWizqW_jt0