You are fighting a war for good cause, but this war has already been lost. Crypto means crypto currencies at this point, whether you want it or not.

For what it is worth “[sic]” does not mean that something is incorrect, just indicates it is a direct copy of another source. Could be an error or typo, could just be idiosyncratic, archaic, or potentially confusing.

In your case it would not be appropriate, because like it or not the quote usage has become normal usage. I understand why that annoys people, but it’s done.

Crypto has become a shorthand for cryptocurrency. Google "crypto" and see what comes up.

Yeah sadly, it bugs me too. Also when somebody says "turn on the air" they probably are referring to air conditioning.

It's standard usage at this point, adding a [sic] would not be correct. You should climb down from this hill.

Times (and words) are changing