They are a rich country. I don't think Qatar's government was wrong in making this law. Many countries have done the same, and China has even imposed a lot of strict rules on cryptocurrency users. But that doesn't mean Chinese people can't use cryptocurrencies, there are lots of ways to circumvent the law, but it needs a bit of knowledge about security and the internet anonymous.
Btw, some of my friends in China are always complaining about this, they always compare that to me whenever we talk about crypto.
