I think that you can not take cryptocurrency as "property". This is extremely not reasonable. Cryptocurrencies are digital currency, money, and imposing a tax on money is accordingly silly.
As of now, governments consider cryptocurrency as "digital assets" that being used in investment. These digital assets are like gold where prices fluctuates based on speculations. These digital coins can be classified as property. Though we know that this is not the real purpose of the coins. The question is when can we consider these coins as currency? As soon as the application of the blockchain go mainstream.
Actually without even mentioning crypto as a currency, you can still use crypto as a currency right? the government can say it is a digital asset, but the most important thing is legalization right? so you can use bitcoin to pay for anything without fear of a ban
if cryptocurrency said as currency by government it will make new surprise for us.investors will feel glad with this announcement, but i think i would not happen in near future.they prefer consider it as digital aset.