> FinCEN is incorrect.
No, they aren't.
> Go look up the definition and history of the word "virtual."
Even if that supported your argument (which it doesn't, see next paragraph), it wouldn't matter, because the meanings of phrases aren't necessarily determined by the meanings and/or history of the component words in isolation.
But FinCEN's definition of "virtual currency" is consistent with the common definition of "virtual". Their definition of "virtual currency" is exactly the #1 definition of virtual [1] applied to the uncontroversial definition of "currency". (And calling Bitcoin virtual currency would also be consistent with definition #4, particularly definition #4a, though some non-electronic entities that would meet FinCEN's definition would be excluded by that definition.)
> And I've been making this point since before FinCEN started caring about bitcoin.
You being wrong for a long time doesn't make you any less wrong.
> I don't know if you understand that the government does not create truth.
I don't know if you understand that legal definitions established by government do create meanings that are used in legal documents such as contracts, terms of service, etc., whether or not they are "truth" in some abstract, idealized sense.
[1] from: http://www.merriam-webster.com/dictionary/virtual