I think Japan, Singapore, and Hong Kong will always be the top on number of crypto users because they belong to the rich countries in Asia, unlike some other countries. The country`s economy will always be the reason.
Maybe the economy will help them why they are in the top list and all the country has been listed who asian crypto friendly country is have a good economy compared to the other country. Philippines the economy is I don't think if growing or not but my country is crypto friendly too because we use crypto freely because we supported by our government.