> You don’t need CBDC, just the existing system today. Here in the UK something like 3% of money is available as paper cash. The rest is just a row in a database.

The point the GP is trying to make is that they want to further restrict the usage of cash in economic transactions, & that CBDCs further help in that regard. There's a difference between:

"3% of money is available as paper cash"

and

"Paper cash is banned under all circumstances"