Some of the details are arguable
But the gist of his editorial is right. OS X is for people looking for the "polished" desktop experience. Which is fine. But Linux and BSD are for people who believe in Open Source, want real choices and want free as in speech (and as in beer) OSes. Now after all these fanatical, raving Mac addicts got done flaming him, they might have taken the time to acknowledge the truth about the different priorities people have in their OS of choice. The fact remains that no matter how good OS X can be, you'll do things Apple's way. With Open Source you can make changes, do it your way. And that's the real difference.