> can't successfully operate a motor vehicle
That's a set of goalposts that move automatically to render any argument against it invalid.
No matter how counter-intuitive, error-prone, or difficult the control interface of an automobile is made to be, you can always say: "Well, if you can't figure it out, don't drive!"
Would you fly on a plane designed with this attitude? "It'll drop out of the sky if you accidentally bump anything, without a noticeable warning, but pilots that can't handle flying shouldn't be in the cockpit anyway!"
But seriously: would you get on a 737 MAX without the MCAS fixed?
Would you get in a 737 MAX with an unfixed MCAS a decade after the MCAS incident, when people have forgotten? With a new pilot that had never heard of the two specific crashes?
Or would you insist in flying in a plane designed not to crash into the ground in ways that's counterintuitive for the pilots to deal with?
Similarly, would you let your relatives drive a 2014 model Jeep Grand Cherokee that hadn't been recalled and had the parking brake changed to be automatic? Would you trust your Grandmother to check the tiny little light every time that will stop her dying, or would you take it to the shop for her so that she doesn't have to?