Granted, "misogynistic" only questions its viewpoint. However, "poop" questions its validity as a general theory.
It looks like the theory was developed by one person (with acknowledged help from a friend), and it probably accurately described his viewpoint and experiences. That's not a good basis for generalizing it, though.
You'll notice that on the "Common Criticisms" page, the author makes no claims that the theory has general application, only that it applies to him. As it certainly does, since he came up with it. All his arguments beyond that essentialy boil down to "it's right because I say so."