I love bitcoin and all but a lot of these statements surround communism (which I don't necessarily believe in) rather than all socialism.
- Marx also wrote of a socialist/communist country as being devoid of currency (obviously means as controlled by the state, as nobody can stop people using a decentralised currency like Bitcoin). It's unclear to me whether centralisation of banking was a stepping stone towards making it easier to abolish though.
- Surely nothing is stealing if everything is owned by the state? Problem solved lol
- Bitcoin is an imperfect market by definition as it gives rewards to miners, though as you said it is required to keep the system voluntary.
- Regimes like Stalinism and Maoism have certainly killed 100M+ people, so has capitalism (including blatantly capitalist governments like China, despite calling themselves the Chinese "Communist" Party).
The rest of your points are actually quite interesting, I'll have to think about this a bit more