(You may have a point with respect to systems like Supercruise and Tesla FSD, but that’s not the topic of this article.)
Really? My understanding is that many new vehicles have lane keep assist and dynamic cruise control, but that they are much more limited than Autopilot. For example, lots of cars have much tighter limits on the curves they will follow. They also don't have the UI that Autopilot has, which shows what cars it detects. This gives more of a sense of full autonomy (although I find it a bit creepy/worrisome when vehicles appear and disappear on the screen for no reason — one would think this would give people pause).
There are definitely more expensive vehicles (Cadillac, Mercedes) that have more robust systems, but my sense is that your typical Toyota, Subaru, etc. isn't close to Autopilot.
Some people argue that Tesla customers think they've been sold autonomy. I can't see how. Tesla goes to pains to make you aware of the $12k you would need to spend to get the system that "self drives". You are painfully aware of the $12k you didn't spend.
Autopilot. This automatically accelerates, decelerates, and steers on roads. This works on all roads with lane markings, not just limited access freeways. It also obeys speed limit signs.
Enhanced autopilot. This is autopilot but will also self drive from on-ramp to off-ramp, changing lanes to pass (and exit the passing lane), taking interchanges to other freeways, and exiting the offramp.
Full self driving beta. This will drive on pretty much any street. Early on it was purely a gimmick that required constant intervention, but lately it’s gotten pretty good. My main complaint is that it drives too conservatively, causing impatient drivers to behave erratically around you. Imagine someone driving as if they're taking a driving test. Because of that I tend to drive manually unless I’m on a freeway.