The article is a little bit missleading as it doesn't classify countries where crypto gains are taxable. However, it helps to know the legal situation of the crypto in any country by just doing simple search as it contains over 130 countries. Comparing all the entries, it's early to talk about a decentralised finance as old school governments still can't update their methods to handle progression in technology.
I have edited my previous post with a link to a great article which i found more relevant about taxation in the crypto industry.