(he isn't, for what that's worth, I personally know thousands of others that fit in the exact same category and I am sure there are many, many more.)
"personally know thousands". Let that sink in.
I do not physically interact with the people in question on a regular basis in meatspace, but the mindset is basically the bedrock of near every anarcho capitalist focused community in existence, and within this sphere I have regularly observed at least that many frequent participants on discussions.
So the idea that the position held is useful in identifying who that person might actually be based on its rarity is not very plausible. Unless all those people are actually just sock puppets I suppose?