He's assuming the existence of just one distro with an universal approach, I mean I'd never use Coyote Linux for a non-Router device for example in Samsung Galaxy Tab, and vice verse I'd nerver use Chakra for PS3 (The first ones) or for a router, But I can choose between GNOME or KDE, or LXDE, etc. or I can choose between two light DE like XFCE or Razor-Qt, or even KlyDE (I know that Martin Gräblin, the KWin hacker has say about what is a light DE, let's assume that you can define exactly what it is a light DE ). If you don't want an all options distro you can get a single target, like Chakra, Pear Linux, Bodhi, Ubuntu Studio or some sort of specialize distro.
And I keep pushing up some another examples; but I think I made my point. So in the linux is not exactly about choice; but I can choose, if I want, even without go beyond of the frontier of a "complete" OS with a linux kernel.