Just FYI, I have never heard an SF techie say these kinds of things. The many people I've talked to at networking events, 500Startups, and through friends have expressed empathy that so many people have it so hard, an urge to help in whatever way we can, and anger at the system and culture that has placed so many people out of reach of the benefits of a developed country. A lot of us are now talking about a basic income, which would give people the freedom to create wonderful things and do what they love -- which as a side effect would provide a huge boost to the economy in additional production and consumption.
But "human trash"? No. I tend to filter out people who think like that.