> The worst part is that there is already another word for cryptocurrency. Blockchain.
There do exist cryptocurrencies that are not based on a blockchain. For example, Iota is based on a tangle, which the creators of Iota claim is better suited for their intended IoT applications than a blockchain.
Or more centralized cryptocurrencies, for example eCash, which was invented 1983 by David Chaum:
There do exist quite some privacy-conscious people who for this reason don't have a mobile phone and very actively don't want one.