I admire Gladwell the man, and I think he probably has a net-positive impact on most people who read him. But he's highly disappointing for those who want a real spark of insight, or an intellectual exercise. (Also, tangentially speaking, his books are pretty repetitive; most of them could be summed up adequately by a single paragraph, if not a single-sentence logline).
I guess the real question is: are we, the self-described nerds of the article, really better off in a world full of Gladwells? Or were we better off when insight was hard to come by, and you had to go off looking for it? We have a lot more information and insight at our fingertips, but have our critical thinking skills atrophied accordingly? I realize you could take this line of thought a little too far and follow a sort of neo-Luddite vein with it. But that's not my intent. Rather, I'm just asking if all this ready-to-eat insight is actually good for us. I think it's good for the averages, but we probably think of ourselves as being at the margins.