I don't know where this idea that "Autopilot" implies more capability than provided. As far as I can discern, it's just made up by detractors - It's actually a very historically accurate, descriptive and applicable name for the current capabilities of Tesla's implementation. Why Ford would imply otherwise is simply not logical.
Let's explore the term and it's common usage and meanings before Tesla adopted it:
From Vocabulary.com:
Merriam-Webster
Etymonline.com
Wikipedia:
The first fishing boat I worked on was built in 1919 and still had the original autopilot. It had an electric motor controlled by two contacts that were tripped as the compass rotated around. You simply set your heading and the electric motor would steer the rudder left and right to keep the set heading between the two contacts. It liked to weave and wander and was unusable depending upon the boats heading to the waves and their size. The manufacturer proudly called it "Iron Mike", implying that it was a machine that could do the job of a human.
Later fishing boats I worked on had more modern, much more capable autopilots. But none of them could detect logs in the water, water too shallow for the draft of the boat, etc. They couldn't adjust the speed of the boat either, only hold a set course.
Airplanes are what I think popularized the term "Autopilot". While I'm not an expert on autopilots, it's clear the term started with devices to hold a magnetic course. Autopilot did not denote a device that would avoid flocks of birds or other airplanes, or be able to operate without operator oversight. It was simply a device to unload the tedium of maintaining a course and, later, speed and altitude. It did not replace a human or take evasive action.
In terms of the supposed controversy that the term misleads drivers by implying it does more than it's capable of, it might be instructive to look at the use of the term in popular culture. Vocabulary.com provides this: "The slang meaning of autopilot is "out of habit," as when a sleep-deprived worker goes through his whole day on autopilot." Even in popular culture, the term is used for something that is just a semblance of control, not fully alert and aware of everything around.
So it's really baffling where the idea came from that Tesla's use of the term implies more capability than exists. If anything, it offers MORE capabilities than the term denotes in its ability to take evasive action or apply the brakes if the operator is negligent in monitoring the environment.
I agree, Tesla’s autopilot is more capable than many aircraft autopilots. Many can only do things like heading and altitude hold, and some don’t have autothrottle. When responding to any abnormal situation like a traffic conflict or unusual attitude, pilots are trained to disengage the autopilot and autothrottles immediately.