Isn't it already, though? From how the media uses it, pirating software/ebooks/etc. is copying without permission, right? So in this case, the use of the word "pirate" is a bit ironic, since it isn't really possible under the CC license, but I would think it is still basically valid.
Again, the use of "piracy" here is ironic, sarcastic, facetious.... As such, it doesn't really equate "piracy" with "copying" in a general sense, only in the sense used the author of the website. In a general sense, everyone knows it isn't piracy if it's legal.