Do you consider Bitcoin(or cryptocurrencies) in general a social movement? If you consider so, social movements need a formal organization to support the movement. Is there a formal organization behind Bitcoin?
I do not think so, bitcoin is a solution to a problem, basically governments took control of issuing currencies and since then they have been defrauding the population, bitcoin solves this by offering a currency that cannot be controlled or censored completely by them while at the same time giving you complete control over your wealth.
However social movements could form around it in order to support it or they could use bitcoin for their own means, after all a government that has control of the financial system can easily shut down any opposition by just closing down their bank accounts, something that is not possible if you are holding that wealth in bitcoin.