The key is “with human supervision”. Calling it Full Self Driving with “Supervised” in parentheses aftwards while putting out videos where they say the only reason there’s some behind the wheel is because of regulations (those annoying “regulations” amirite?) leads people to think they don’t really need to supervise the driving of the car.

Couple that with the fact that there are actual full self driving cars (Waymo) there’s even greater confusion.

People have been killed because of the misconceptions about Telsa cars actually being full self driving. Which they aren’t, they cheap out on the hardware needed for that to be possible, let alone the software.