> It wasn't the full Autopilot, just the lane following/adaptive cruise control kind of thing but we almost did go off the road at least once.
Your friend should have warned you that there are conditions where AP is expected not to work well, they're also clearly stated in the manual. I tend to agree that Tesla oversells the AP/FSD functionality just by the name, AP should be renamed to "vision lane assist", or something along those lines.
> But in general with the UI, there was a lot of, "Hey, how do I do [elementary car function]" and he'd be like "Oh I think they changed that [or moved it in the menu] in the last update, uh let me have a look"...
As an M3 2019 owner, I recall 2 instances since 2019 where stuff was moved around a lot, otherwise it's pretty stable.
While the first big update sacrificed some navigator real estate space for non-FSD users as well, it also grouped speed, speed limit and AP limit better at the top left corner, which used to be placed further away (now I don't need to turn my head anymore, I just glance bottom-right). The second one introduced dynamic tiles at the bottom for the less used stuff (things which were otherwise hidden behind non-intuitive areas, like the T Tesla logo at the top center of the screen).
After 6~10mo ago (can't recall) they grouped all car commands in the same panel when you bring up the settings to make it easier and more consistent to access those when required.
UI has gotten much snappier since I got the car, even though it's still running on a very low-end Intel Atom chip.
My feeling is that some breakage is sometimes required to achieve better solutions, and while there's the usual outrage of "changing my workflow" ® in the beginning, Tesla UI updates are usually for the better in the long run.