I agree that Unix is the greatest operating system family ever created. However, I can only agree that Mac OS X is the expensive brat of Unix. The only way to access it legally costs too much money. The fact that it forces regular users who can't afford it to piracy says a lot. I just sold my retina Macbook Pro because it cost me too much and I only used it for websurfing. I didn't feel encouraged to use it to its full potential at all, but maybe that's out of habit having coded in Windows and Linux distributions for so long.
What can I get from OS X that I can't get out of a Linux distribution? Mostly universal agreement with software developers, even though I still find executables that nobody bothered to replicate for Macs. Maybe the tech support of an international corporation, maybe errors that aren't intuitively solved without hours of experience (although some view that kind of learning as potential for growth), but to issue a blanket statement for it like "world's most advanced operating system" is a stretch. I think Apple's marketing and hardware aesthetics is the true reason it thrives so well, besides people who literally grew up with Apple computers.
But I guess that's why Apple makes more money than Windows. I dunno, I've never made a billion dollars.
EDIT: Sorry for encouraging the necro.