I am not involved in suckless, but who is this "they" you are talking about? This is one individual whose only connection to suckless appears to have been starting 2 threads about surf in 2017?
Bitcoin is not predominantly mined by a ton of individuals running an ASIC or 2. It is mined in huge warehouses, which have to go through state/federal bureaucracy for business licenses, etc etc. It would be hard to enforce a complete ban on anyone mining any Bitcoin, but the vast, vast majority of mining could be easily shut down in the US, as it was in China.