I can tell you why crypto is so popular in Russia

Don't know about Indonesia (but the same reasons can apply there as well), but in Russia people are very suspicious of the local government (deep inside) up to a point where they can publicly tell you one thing (e.g. that they fully support whatever the government does) but in reality they definitely know better (read, they don't trust the Russian ruble). And crypto happens to efficiently and effectively end the government control over personal finance enforced via inflation and a multitude of other nasty devices (given the rich history of fiat devaluations and money expropriations in this country)