This all depends on the definition of crypto..

For me, a cryptocurrency has to rely on public key cryptography. The exact variables (PoW/PoS/.., inflationary/deflationary, max supply, etc..) don't matter.

A governmental issued cryptocurrency would just be e-fiat. But if (for example) it is a fork of bitcoin with adjusted parameters and additional stuff, it still would be a cryptocurrency.
Ripple's foundation can inject 2 times the whole current circulating supply into the eco system. This is 0 decentralized and one entity has full control, but it still is a cryptocurrency (even if it's not a really good one). At least in my eyes.