People don't like the constraints of smartphones but they don't understand computers well enough to articulate it. That you do and then you mock me for pointing it out indicates a particularly ugly kind of follower mentality.

X11 isn't that important, it's the large app library it brings with it (many apps that after 24 years still have no replacements on either smartphone OS.) For power users the flexibility is nice too.

Onboard dev environments aren't useful to most people but it indicates/allows a few things:

1) Individual users who are inclined can easily improve the platform with very little effort.

2) The owners of the platform aren't stopping people from doing what they want with their own devices.