This probably isn't the place to have a debate on Latour, but let me just say that it is possible to read him unsympathetically (as Sokal does) or sympathetically, to try to understand the viewpoint he is trying to get across. I've found it worthwhile to do the latter, but YMMV.
I more or less agree. I used to have a more negative view, but I realized that what you get from Sokal et al is a fairly inaccurate and biased reading.
Actually, while I thought the Sokal hoax itself was brilliant, I'm in retrospect quite disappointed by his follow-up book. It reads like a bit of a lazy hatchet-job by someone trying to put together an "attack" piece without having read the stuff he's attacking, and certainly not trying to read it sympathetically.