Are we at all certain Rich has actually played 4th Edition yet?
I mean, I haven't. Lots of people I know haven't. I don't even own the books. It's not as if 4E has been universally embraced yet. I remember that Rich said somewhere on his site last year or so that he hadn't actually sat at a table and played any RPG since 2005 or so, so it's possible that he has simply never run the system.
At any rate, I can't believe anyone would actually be angry about him not making a switch that he didn't say he would make. He never said he would transition, he said he WOULDN'T transition, but he reserved the right to crack a joke about it if he saw fit. That implies he also reserves the right to never mention it ever again. He's under no obligation to stay "current", any more than any D&D player is. If you don't like it, stop reading. No one ever claimed that OOTS was going to be exactly what you wanted it to be forever.