In a marxist society you wouldn't own any bitcoins. All your coins would be seized by the communist party or the big brother. Wake up!
I agree, he is wrong and mixes things up. For example:
No, in reality pure capitalism, has few taxes, and ancap would tell you that it should tend to 0 taxes. So check your notions because it seems to me that what happens here is that you are a Marxist and then you tend to see everything in your prism, but try to see things from an objective point of view.