'it will severely cripple the adoption', I'm not sure it's so straightforward as that, if large numbers of governments take an authoritarian stance on independent global currencies is there not a possibility that, while impacting network efficiency, it might underpin a new found desire and need for said independent global currency and instead drive adoption of currencies that have this resilience?
I think it’s worth than that for bitcoin as bitcoin relies on a connected network for security. The risk of forks is too high without that. For other cryptocurrencies based on BFT at least the network would come to a stop and safety wouldn’t be violated (no double spending).
