He is giving an explanation for why he "broke up with" Libertarians and abandoned his strict no political participation stance based on the non-aggression principle, and his explanation is "SOME libertarians are hypocrites."

My point is that "SOME Libertarians" being hypocrites is not a logical reason to abandon Libertarian Principles. If you wan't to refute Libertarianism, you present a counter-argument that refutes them. Pointing out that some Libertarians are hypocrites is just a Logical Fallacy.

He's not just calling out the hypocrisy, he's using the hypocrisy to justify political support for Statism through a Statist. And it does not follow.