Comment by Grimm1

Unfortunately language isn't a static thing and is somewhat defined by the dominant usage of something over time (unless you're in the rare country that has fully prescriptive language). I had been using crypto as shorthand for cryptography for a long time but cryptocurrency quickly subsumed that. If I talk to any of my non technical friends, and even technical friends who don't touch cryptography, crypto = cryptocurrency. I think the war is lost here.