There are a lot of communities, from Reddit's /r/crypto to Freenode's ##crypto channel, which use the "crypto" shorthand for "cryptography" have been around for decades and in the past couple of years have been inundated with cryptocurrency obsession.

TL;DR - The main goal is: "Get off our lawn."

Yeah, I get that. But I mean the plural version should be exclusive to cryptocurrencies since I've never seen the plural form of cryptography in use. It seems it's fairly unambiguous in that "cryptos" as a plural term has never been used to refer to cryptography(ies).