Allah may have been influenced by our posts over at Screw Loose Change, which he linked. I'll admit that there's an argument to be made that Kerry had to know what the questioners were really implying, but from our standpoint at SLC we don't want to chide Democrats and liberals for dodging the Truthers as long as they don't really encourage them. We try to be non-partisan at that site (although both of us are Republicans).
If Kerry replies about this stuff being crackpottery, the questioner may start on about "free fall speeds" and "NORAD stand-downs" that a) Kerry's not equipped to answer and b) that doesn't sell copies of his book. And in fairness to Kerry, the questions were oblique enough that they didn't require a forceful refutation.
If a Democrat wants to dodge the Truthers, I'm willing to cut them a break, just as I would cut Republicans a break who dodge the North American Union nonsense, and all politicians dodged that "notch-baby" crap. I don't like Kerry; I've got pretty good credentials in that regard.