That sounds pretty harsh and I wonder if this could be accepted in a fully democratic country. In western nations cannabis is getting legalised, so people getting caught with larger amounts are not facing any prison time anymore. Which would be crazy if then people who own BTC are getting arrested instead. Owning BTC alone should not be a punishable offence, only if the BTC are being used for illegal activities. In my opinion banning crypto currencies outright is never a good solution and will only move BTC transaction out of the government reach. A ban one something never works 100%, there will be loopholes. If I were in charge than I would use taxation as my main tool to control the use of crypto currencies in my country. If the government really wants to reduce the use of cryptos, than increasing taxation would be one option. Like this the government will actually profit of the use of cryptos and still gives it's citizens the option to choose which type of currency they want to use.
No country can be called a full democracy, if it is called a full democracy, there will be no laws and regulations. Cannabis is banned because it's addictive and creates social ills, but if it were legal, the government wouldn't be affected too much. But if this is the case with bitcoin, bitcoin is not addictive but will seriously affect the power of the government, so they can still take drastic measures to crack down on bitcoin.
I still believe the government can ban bitcoin altogether, but if they do, it won't be in their favor either. Instead of banning, they can regulate and control us through regulations and taxes, precisely what they want more than ever.