That's kinda confusing. Article says that they maintain a conservative stance on bitcoin. Meaning they dont recognize it as a legitimate means of payment. However taxing it is one way of legitimizing it. Am i missing something here? But anyways, i do hope the taxing system works both for the government and the crypto industry. If it works, then maybe other governments would follow.
For this last year, people are earning with BTC a big money and the some governments don't really care that much but when more people are earning more than the salary of high ranking official in the gov't they are bothered now so they try to impose tax as they recognized BTC and altcoin as one source of income aside from having full time job or small business.
Because someone who just deposit money to their bank account with large money and they don't have work or business at all will be suspicious and perhaps be investigated and maybe be charge with a case of money laundering or involvement to illegal business.
And you woudnt like it do you?