Can we have a variation that is something like: you have read even a modest amount on it? I'm not a philosopher, and my philosophical knowledge amounts to having taken 3 courses in undergrad (as electives while getting a CS degree), one in grad school (same), and reading a scattered set of books and blogs that interest me. I wouldn't consider myself qualified to opine on Philosophy In General. Yet, this blog post seems to be by someone who knows less about philosophy than I do, yet is more confident in his opinion to give a sweeping judgment of it. That's sort of impressive, but doesn't give me a lot of confidence that I'm receiving well-informed opinions.

Actually, that seems like a logical critique in any field. If someone who clearly had read only a handful of things about quantum physics holds forth on why quantum physics is bullshit, it would be a good heuristic to assume that they probably don't know enough to make that judgment, and maybe they should learn some quantum physics first.