The critiques he applies to it are kind of short-sighted, though.
Didn't even view it as a critique. The article seemed to say, here's an explanation of the theory, someone should test the theory, someone other than the author should test it though, but here's an article about an idea of how to test it.
Exactly, However I don't agree with the standards that they use there.
It doesn't take a majority of a personality type to influence society.
Look at the SJW's, there's not a whole lot of them but they exist in the most influential sectors of society: Mainstream media, Hollywood, the recording industry, online news outlets and in most major universities.
in the 1930's only a handful of Germans were Nazis....