"Autopilot" is short for "automatic pilot" which is defined as "a device for keeping an aircraft on a set course without the intervention of the pilot."

If their "Autopilot" needs any sort of human supervision, either it is faulty, or tesla marketing is misleading. Either way, in case of an accident, it's tesla's fault - the name of the feature strongly implies that no human intervention is necessary, and talking about it with many pilot friends they all agree.