Do you have evidence that "a desire to create centralized digital currencies" has anything to do with "banning cryptocurrencies"? Because lots of countries have expressed interest in CBDCs and most of them aren't talking about banning anything. Indeed, it's often central banks talking about CDBCs, which aren't even in the position of banning anything.

Seems to me that CDBCs are just the new topic for conspiracies about how cryptocurrencies are being held back by the Powers That Be.