Autopilot means self-piloting. How many average people know the extent to which autopilot on airplanes is used, and what exactly it does? I would imagine a good bit of people think that autopilot does everything and that the pilot is just there in case of an emergency. If you translate that to cars, given the number of people with driver's licenses (not exactly a specialty like being a pilot is), I think it's dangerous to use the name autopilot.
Autopilot has never been used to describe a system which does the entirety of control functions on its own. Ever. Autopilot is an aeronautics term, and every system ever described as autopilot has meant the ability to maintain course. That is all.
In actual fact, because Tesla's Autopilot has lane change capability, it actually goes above and beyond the conventional definition[1] of "Automatic Pilot".
Anyone with half a brain doesn't even expect a "hoverboard" in 2018 to actually hover, and that is a bastardization of the term. I'm honestly struggling to understand why people are having such a hard time with this.