Jonah โ€” Your response to Drum is excellent, but thereโ€™s one point you missed: Kerry himself says 9/11 didnโ€™t change all that much. Hereโ€™s the relevant passage from the Oct. 10 NYT Magazine piece:

When I asked Kerry how Sept. 11 had changed him, either personally or politically, he seemed to freeze for a moment.
โ€It accelerated โ€” โ€ He paused. โ€I mean, it didnโ€™t change me much at all. It just sort of accelerated, confirmed in me, the urgency of doing the things I thought we needed to be doing. I mean, to me, it wasnโ€™t as transformational as it was a kind of anger, a frustration and an urgency that we werenโ€™t doing the kinds of things necessary to prevent it and to deal with it.โ€

If Kerryโ€™s view of 9/11 is that it just โ€œconfirmedโ€ the need to do the things he already wanted to do, thatโ€™s scary.