My point was that if there is a structural problem, looking for structural solutions is a better angle than moralizing. If mathematicians are working for the NSA, instead of yelling at mathematicians, I'd want to ask, what is causing mathematicians to work for the NSA, and what would change that?

Same reason that, if you think gentrification is problematic, yelling "die yuppie scum!" at the poor schmucks trying to find a decent apartment in an overpriced area isn't either an effective or an intellectually sound strategy. Instead, one ought to look at the structural forces producing gentrification, i.e. the developers and capital movements.

An article on that subject: http://jacobinmag.com/2013/05/the-fucking-hipster-show/