That can't be what's being talked about in this post. Otherwise this post wouldn't make sense. Those are fundamental tech topics. The term crypto seems overloaded

It's very overloaded, which is increasingly a problem for those of us who work with cryptography. I have started to have to be careful to stop saying "crypto" when I mean cryptography.

Even though "crypto" has been short for "cryptography" since before cryptocurrency existed, increasingly people interpret it to mean "cryptocurrency" instead. It's a bit like the linguistic fight over the redefinition of the term "hacker": it's a lost battle.

Well, since GP said "other than coins", I interpreted it to mean "uses of cryptography other than cryptocurrency (coins)". But, well, I'm getting downvoted, so probably not.