As for hash rate, it does make sense to me for governments with a vested interest in Bitcoin to want to mining and defend the network themselves, just like non government users do.

Maybe he doesn't have any other arguments beyond that because they don't exist. 

How is he a spook? You know he works for the US government. So to thousands of other Bitcoiners. They just don't tell you. A spook would be someone that doesn't tell you.