The argument is reversed entirely if you take human desires as given, i.e. if you acknowledge that people do text on the road.

The metric to compare both alternatives then becomes, how many miles of texting while driving vs. being driven by an autopilot while texting does it take to kill one person. I don't have the numbers, but I'm pretty sure the latter is lower. Maybe autopilots encourage "bad" behavior, but convenience also spurred construction of coal power plants at the cost of shortened lives. Much like fines for neglected pollution abatement, I would favor mandatory life insurance for each mile on autopilot to internalize risks.