They explicitly state that the digital euro is not here to replace cash:

Q3. Would a digital euro replace cash?

No. A digital euro would complement cash, not replace it. A digital euro would exist alongside cash in response to people’s growing preference to pay digitally, in a fast and secure way. Cash would continue to be available in the euro area, as would the other private electronic means of payment currently being used.

I agree. Cryptocurrency will probably never be the solution for this. I am hoping for GNU Taler instead.