That is a very big possibility that muslim countries will accept the cryptocurrency system with in their countries, because there is nothing wrong with muslim countries accepting cryptos as currency, because it is just currency and at the ssme time an investments in rhe digital world.
Yes this is a possibility that in the near future, Bitcoin will be accepted by the Muslim countries like many states in Middle East count in Dubai and may be Qatar.
There is also a school of thought that the crypto currencies are not allowed and your religion does not allow you to trade in crypto but there are many things that are going on in these countries which are also not allowed by the religion so it is a very big possibility that in the near future, Bitcoin and other coins will be accepted by the Muslim countries as well.