Would you say that most of the benefits you attribute to cash can only be realized electronically using cryptocurrencies?

None of those qualities are true of crypto currency. It is not anonymous with bitcoin, it is not final as with tether, and KYC makes it not censorship resistant either. And for all this it has fairly high tolls too. Crypto is not a currency used for trade except illegal trade. It is a greater fool scheme.

Tolling on cryptocurrencies is absurdly high.

In most developed countries outside the US, electronic bank transfers and payments fulfil 1 and 3.