Well, the most coherent points I could find in it were that liberals deny reality, refuse to blame anyone for anything, are pacifists to the point of stupidity, and use these attitudes to justify "progress" and "open-mindedness" which leads to all sorts of crazy things like "libertarianism, atheism, weird sex" and "postmodernism".
The problem is that he's got exactly zero data to actually support any of these claims. He's got Pew survey results that indicate the "Millennial" generation is more open to change, and says that this doesn't tell us anything about their intelligence (as if anyone were claiming that it did) and another study on liberalism, atheism, and IQ... and somehow this is supposed to prove that liberals are all thinking backwards.
It takes a long time for the nerdy self-conscious low-self-esteem dropouts of the world to unite and overthrow their betters, but they've had many centuries to do so, and they finally started to really pick up steam around 1945 or so. Ever since then, being strong and doing what's right has had that nasty sting of "well, you could be the new Hitlerstalin" to it, and so smart people have backed off from changing anything beyond their own matching paint tones at home.Hmmm... waitaminute, who's been making comparisons to Hitler and Stalin lately? Liberals?
Which brings me to another psychological trait that's actually got some research to back it up its existence - right-wing authoritarianism or RWA. The concept of an "authoritarian" personality was originally proposed and observed in research situations after World War II, and was further refined into the concept of RWA in the 1980s by Dr. Robert Altmeyer. The construct obviously can only tell us about group tendencies, and not about individuals - but the tendencies that come along with RWA have been fairly consistent wherever it's found, and they are fairly disturbing. You'll also notice that Altmeyer was unable to find a liberal/left-wing equivalent of RWA, although he looked for one.
This guy's analysis of liberal "psychology", on the other hand, is nothing more than a list of his own assumptions about what liberals must be like, which tells me that he can't have talked to very many liberals.