I have a theory that some of the anger at techies is driven by the fact that they are, in many cases and in popular imagination, fairly nerdy. People are used to looking down on these people, given America's school system and typical corporate makeup. Perhaps it even has evolutionary roots. And, by and large, nerdy kinda-liberal people are inclined to take it, agree, and supplicate.
Compare and contrast with the treatment of the financial industry in the Bay Area. Even on HN, taking shots at an obviously fraudulent financial system and the people in it will get you jumped all over ("they allocate capital efficiently!", etc, etc. et-tripe-cetera) while articles like this will elicit more balanced and self-aware commentary.
My theory is that this dynamic is more prevalent in the press and non-tech thought leaders, etc. not in the middle and lower classes.