maybe their start accept cryptocurrency because they see the opportunity with crypto.
as we know crypto not just use for payment or currency but aslo for investing, and it will give impact to economy that country if they can wait in longterm.
so this is good choice to start accept crypto. we need more like this in other country who still not accept BTC.
At this point most countries are afraid to make unnecessary moves so it would be quite hard to convince adopt cryptos.
However they (countries) don't understand how crypto can attract new investments which is obviously good for economy