What makes you think the auto manufacturers are being careful with software? They aren’t, or are doing the bare minimum.

What, you're expecting the car to explode if somebody plays a Netflix movie or video game while waiting for someone to come out of the store?

And again, if I wanted to, I can make the same argument you just did (carefulness) about the hydraulics that hold the rear hatch door up, or the tires that were on my SUV.