Well, I'm an attentive driver, so I wouldn't use anything that drives worse than me.
A lot of people probably feel the same.
A lot of people probably feel the same.
But... no one is forcing anyone to use this system. They elect to. Thus this is the wrong question, but rather if drivers should be given the option to use the system.
If anything it might be reasonable to infer that poor drivers are more likely to use this system, so the standard could plausibly be below that of an average driver while still improving overall safety.