The complaints aren't about FSD, but simply operating the car for any and everyday use. And, actually, Tesla is probably more responsive to internet comments (clenching fists and stomping feet, virtually) than any other car manufacturer.
I don't mind the missing X to close a screen - I prefer swiping down (I have an intention tremour and it's easier and safer than hitting a small X, in my opinion), but I don't like the slider controls for temperature (fortunately, I rarely change the temperature by more than half a degree anyway, which is just a tap).
As for driving hand position, it's true that 10-2 position is not recommended any more because of the fracture risk in case of an air bag deployment. They say 8-4 is preferred, but 9-3 is OK too. I find 8-4 to be uncomfortable, so I'm trying to use 9-3 instead (but I'm old, and I keep defaulting back to 10-2, but I'm learning).