This is because gyroscopic forces are not significant except at high speed, and most of the forces relevant to cycling and which direction the bicycle goes are generated between the front tire and road surface. Turning the handlebars to change direction is also only relevant at low speed for the same reason.
I can't really see how a craptocurrency attached to a messenger provides any sort of pseudonymity. If I can send money to you, I can later identify you in a ledger, which simply means I need to find some reason to converse with you and it's game over. If the ledger isn't public, you're back under corporate or Government control.