Bitcoin is now considered by the government as a property, not an income . This is the reason why they want to put taxes. I guess it is fair enough for those who earned hundreds of thousands here in the crypto world. But for those who are just starting to earn, the government should not. Still, I am in favor of the taxation. But the government should also consider the status of the bitcoin's market price.
We are oblige to pay the taxes from our income so it is right to pay taxes for the government specially when they declare Bitcoin is legal.The formula of the tax collection should be the same formula that used when we are earning fiat in which it will always depend on our income and our capabilty to pay because of our family. Therefore i think the government is always fair enough for all tax payers that it will always depend of their capability to pay.