Kind of true kind of not. You can still order the off the menu tesla without autopilot. Tesla just rolled the price into the cars one day and said it's standard.
Not true for the vast majority of Tesla customers.
Model S (all versions)
Model X (all versions)
Model Y (all versions)
Model 3 LR and P
All come standard with Autopilot. There is no "off menu" option to purchase without Autopilot to my knowledge.
You do have the option to order an off menu Model 3 SR but it has less range and fewer options than a Model 3 SR+. In any case I would guess that less than 1% of new Tesla owners buy the off-menu SR without AP.
GM supercruise is a little different than autopilot in that it is hands free. You don't touch the wheel. What is interesting is that GM ultra cruise will be able to turn on city streets and still hands free. I doubt we see any of this until 2022 though.
I have used supercruise and it's pretty good. People will hate on me but tesla should ditch the hold the wheel system and go to an eye tracking system like GM. It's safer and the experience is better.
As you know, Supercruise is much more restricted than Autopilot and can only be used on specified freeways. While the map is growing Supercruise is nowhere near as versatile as Autopilot.
As for safety, if Supercruise were really safer than Autopilot I'm sure GM would release accident data for it and be heavily promoting that data to its customers. As far as I know that hasn't happened, even though it should be easy for Supercruise to have a lower accident rate given all the restrictions on its use.
Of course it is possible that customers use Supercruise so rarely that GM doesn't have solid safety data yet. On its website GM says there are "over 5,000,000" miles on Supercruise. Making a WAG that 5,000 cars have Supercruise (not sure what the real number is), that's only 1000 miles per car.
Super Cruise - Hands Free Driving | Cadillac Ownership
For comparison, Tesla reported only one accident on Autopilot per 4.53 million miles in its most recent vehicle safety report.
Tesla Vehicle Safety Report
The apparent lack of use/interest in Supercruise could explain why GM is offering a relatively cheap monthly rate.