The handicapped argument is moot, most cars that have steering assist or self-driving features such as the Tesla already could be driven with a joystick or similar if programmed accordingly.
I am not too worried about this. This can be made reliable. This is a good article showing the reasoning and implementation. In a couple decades self driving cars will be the norm, so then nobody will care what steers it anyway.
https://www.roadandtrack.com/news/a43350167/toyota-steer-by-wire/#:~:text=Toyota%20is%20not%20the%20first,the%20whe els%2C%20just%20some%20wiring.