1) that’s like saying good UX is entirely optional - sure it is but users will still complain
2) disregarding another blatant discrimination of left-handed users: I switch a couple times per week between android and iOS devices for various reasons and the android UX is so janky and unintuitive it hurts - it might just be my particular device and it’s much better in other cases.
This might be extremely polarising but I agree with GP.