I know... but same difference. It's a skin that emulates an OS which has been scaled down to a smaller screen.

Same issues about the the icons, whatnot would exist there too if it were indeed OS X as if it were (which is real) Ubuntu or Debian on the N900. It's an OS that's been dropped down to the size of a cellphone screen.

Sorta sad I had to spell all of that out and I know there's still ways to attack the semantics of how it's not the same. Let's just put it this way. Full-blown Linux nor OS X, or even Windows XP/Win7 is not optimized for a cellphone's screen. That's why Hildon, Swipe, iOS all exist... for finger or stylus friendly operation.