Good feedback Brian. First, I'm no longer on the jQuery team. I left the team in December of 2011. 

Secondly, and more importantly, the survey itself was mainly distributed via Twitter (not my blog) and the bulk of responses came because of retweets from people like Christian Heilmann, Jonathan Snook, Lea Verou, Faruk Ates and many more who are far more influential than I am and have no direct association to the jQuery project. Someone else mentioned the very same thing you did and as soon as I explained who else was sending out the survey, it seemed to offset their concerns. If you look at the first blog post about the survey, you'll see I had only a handful of actual comments.

So overall, I think the distribution of developers is pretty good.