I'm no expert, but I'd say that "copy" is just a general term used for any digital, intangible goods, it's pretty irrelevant what the "original" is, if such exist at all. Imagine Satoshi writes the code, saves it, then copies it to another folder and deletes the previous file. Has he just deleted the original? It doesn't matter, it's not even possible to say whether or not certain file is original or has it been copied.

And even if we assumed that the entire Bitcoin network is the "original" and therefore not subject to MIT licence, it changes nothing, it would have just been unlicenced, with no restriction of use.