Steve compares “graceful degradation” with “progressive enhancement.” Mostly he takes issue (rightly) with the rhetorical spin that the former applies to the idea of building a website. But I think you can compare them with each other as if they were two different types of crowbar instead: two ways of prising open the task in hand.
There’s currently no plan to switch off FM stations. In fact, many radio bosses have said oh, for heaven’s sake to the very idea. There is, astonishingly, less of a plan for radio switchover than there is desire among the general public for TV switchover. So that must be some sort of record for nothingness.