Professionals will not prescribe a power wheelchair to someone who can't demonstrate the ability to control it.
Really, are you kidding me!!! Quadriplegics are commonly provided with powered wheelchairs, these are people with no motor skills. So where are you getting your info from? Is there a state issue operator’s license for these folks?? Or are they required to complete a driver safety course maybe?? Are their homes and belongings destroyed by their inability to control the equipment? Or are their loved loves permanently disabled from the carnage created by their lack of operating skills?
Please provide URLS to substanciate your claims otherwise don't go down a path you don't understand.