V11 was an attempt to move the UI conceptually closer to cars that are equipped with FSD beta. I know that a lot of people here think that the UI change was Elon's doing or maybe even a few incompetent people on the software design team. I don't agree with this view. I believe that it was a consensus effort at Tesla from the top to bottom.
Unfortunately, most Tesla's don't have FSD and even less have FSD beta. If the UI change had been limited to FSD beta cars, there still would have been grousing and hand wringing, but impact on the total installed base would have been limited. FSD beta users know that they are Tesla's pet guinea pigs, so they probably would have first complained and then been happy with a few changes from the original V11 UI. Right now, no FSD beta cars have 2022.12.1, so those of us in the beta program will have to wait.
So what have we now with 2022.12.1? A few icons were put back on the top status bar. The user can now add more icons to the bottom task bar. A couple lost V10 functions returned. These changes were the most common ones that people asked for.
But the original V11 UI changes that are more in line with autonomous driving are still available as an option. Personally, the left stalk taps and the auto seat heaters will continue to be my choice. Besides, I rarely fool with the touchscreen while driving, except to select media and change the navigation route. To me, using the touchscreen is just a short hop from using your phone while driving.
What did the UI changes have to do with FSD? I literally can't think of one thing that would somehow lend itself to better "Full Self Driving".
They homogenized the menus (and I find them harder to spot the buttons I'm looking for)... they destroyed the bottom bar... Messed with map controls, shrunk a handful of font sizes.