Is The Corner Getting Dumber?

Yglesias points to this ad and vents:

The collective meltdown over at the Corner over the past few weeks makes me tempted to say that a lot of folks have oozed down to Mark Steyn’s level, but actually Steyn’s getting dumber, too, as witnessed by his huzzahs for the ad and puzzlement that no wealthy 527 donors want to pick it up. But here’s a clue the ad, while a damning indictment of Bill Ayers, has nothing on Obama. There’s not even a proper insinuation of wrongdoing here.