Good points but I'll have to kindly disagree. The purpose of any mobile OS that's wanting to be different needs to be at least intuitive. Folks that knew MeeGo/Maemo were having some initial difficulties with Jolla Sailfish in the initial release days. There were folks (some I honestly thought were joking) that were having issues with the gestures and so forth.

Knowing a preceding OS should not be required. I do UX all day; the moment I make the user think, I've started to fail. It should work in a way that the user finds appealing.

Sadly, some folks just fall back into Android or iOS patterns for something they hold in their hands.