Your reasons are good, but in some countries these taxes are going in pocket of corruptical politics, so it has two sides
That is right but consider what can bitcoin brings to the country if they put taxes by using bitcoin it helps the country and we can used bitcoin freely and we are not worried at all about bitcoin banning.
indeed by applying bitcoin in the tax it can help the country in the world economy. but this is also vulnerable by governments cheated by corruption. because the longer it will remain in the know many people and will be a lot of cheating as well.