There are many of us who've left academia and still do science. We're generally maligned, and removed from the ability to even participate in a discussion due to a variety of academic access restrictions, and why?
What's more, day by day people are showing how to achieve scientific credibility and influence through their blogs and paper hosting services like ArXiv or, as Michael Nielsen points out, open journals like PLoS Biology. The majority of scientists still bow to tenure pressure, and frankly I don't understand why. There are other opportunities if you want to gain status, and one doesn't even have to gain traditional academic status if one wants to do real science. There are other options.
I'm not sure blogs are a relevant source for scientific studies though. Not necessarily because I think peer review is the greatest system, but having your paper published in an actual journal (open journals are fine) at least means you managed to convince a few other people that it's worth looking at the paper.
"Intellectually bankrupt" is a pretty strong term to use for people who work for a small fraction of the amount of money normally talked about on this site.
I'm not saying there aren't issues, but blaming the individuals who are trying to make a living by doing science isn't going to help. The success rate of getting permanent jobs in science might be higher than that of startups, but the "payoff" is a small fraction.