Yes... They can. However, you can still sell gold and silver to various sources in order to obtain the cash to get something. They can't and won't ban actual money, especially when they want that for themselves. But they can ban the existence of exchanges for crypto which makes it extremely difficult to legally use your crypto as a currency.
You can sell your crypto in person, just like you can with metal. This isn't that hard. It sounds like you haven't spent 5 minutes thinking about this independently.
Its not metal vs crypto its metal and crypto vs fiat.
Yes... They can. However, you can still sell gold and silver to various sources in order to obtain the cash to get something. They can't and won't ban actual money, especially when they want that for themselves. But they can ban the existence of exchanges for crypto which makes it extremely difficult to legally use your crypto as a currency.
Bitcoin is also way less private than cash.
You can sell your crypto in person, just like you can with metal. This isn't that hard. It sounds like you haven't spent 5 minutes thinking about this independently.
Its not metal vs crypto its metal and crypto vs fiat.
Bitcoin is NOT the only Crypto that you can do transactions with...
When the government shut down the Silk Road did people stop using bitcoin to buy drugs online?
No they did not.
Other markets took Silk Road's place, still exist to this day, and they operate with much tighter opsec these days.
Anything the government bans, multiplies, it doesn't go away.
The government already has a track record on banning gold and banning its exchange into paper money. Look up the Gold Reserve Act.