All is good that we are starting accepting and recognizing cryptocurrencies everywhere, but the governments are overstepping over the freedoms that these coins were built on. The entire concept was to have a free coin, not-governed (thus not taxable) that can be used in any of the world states and in the entire universe of all.
Now, each country tries to charge the ones involved in cryptocurrencies, even if they don't have any contribution for that. We all worked one way or the other for where we are today in the cryptocurrency world and why should we give to our governments a piece of our hard work? They didn't do anything for us so why should we give any? And, another thing is that if applicable - it should not be retroactive but from a certain point in the future. At least, this way, there will be less residence from us.