I'm so glad you're feeling validated, it's so miserable to be adrift in thoughts of "what's wrong with me"!
Stimming is one of those things that everyone does to an extent, since it's basically just "doing things that feel nice". The difference for neurodivergent folks is that it helps us emotionally regulate in a way that neurotypical folks don't need, so we tend to do it a lot more often (or feel extra stressed/anxious/irritable).
Because the number of people who won't buy it because of the LCD screen is smaller than the number of additional people who will buy it if it's $X cheaper at launch.