1. used to mediocrity and enshittification everywhere
2. live in one ecosystem or another. Appart from developpers, I don't know many people who use Mac AND Windows, iPhones AND android. And resistance to change is there to limit moves between one to another. They wouldn't care if apple keyboard sucks if they never used a better one.
Sure, but people might try different things. I switched to an iPhone for three months before the keyboard drove me mad enough to switch back to Android.
Personally, I don't think the fact that the Apple keyboard is unusable is a "geek" thing.