Crypto is a digital currency which is just newly invented even though it has been in existence for the past 15 years now.
So as long as it came in existence before the fiat currencies, it would always be considered a new currency.
So, on that note, every countries has been contentedly doing so well with the transactions and exchanges of the fiats on before the discovery of Bitcoin and then AltCoins follows. So, only those who are able and acknowledgeable to the aim, objective and the potentials of cryptocurrencies where able to adopt and accepts it, made in use of its primary aim of alternative source for payments/transactions including taking the advantage of its investments potential as additional advantages to the technology.
Meanwhile... Others whom are adamant ignorant to it with the inabilities to understand its potential are the ones whom finds valuelessness and unnecessary to the Cryptocurrencies technology.
Orderlinessly, some countries tends sanction and conciously warned against the acceptance of cryptos and authoritatively have it a banned and pronounced and illegal technological indulgences to their territory to protect its citizens from the points of scamming due to their poor mental States of reasoning of their citizens.
But at most point of context about the prohibition of crytop in those countries, it was as a cause of the government's inability to have control over the Coins due to its decentralizations and of course its non-custodial technological system.
In here, it is either the governments are greed because they wouldn't have the audacity to decide in extorting or taxing of their citizens whom are into the crytop spaces or it is assumed that they probably have trust issues over the decentralization system of it.
Furthermore would be a crisis of power tussling between countries via the ledger founders zones and the other countries. Maybe haven't been in a good economical terms on or before the inventions of the crytop currencies so, they tends to be biased against the technology even though they are aware about the coins potentialities.
And finally, some of these countries who are not permitted to crytop are curiously careful so the influential possessions of the crytop via its positive potentials doesn't come to their countries and silent their own fiat currencies while the crytop technologies is of none to hold responsible Incase of damages.