It isn't the etymology that's incorrect, but the theory that became incorrect long after the name was established. Brendan isn't using "etymology" correctly.
I wondered about that, chrise. I suppose one could say that, as a result of what we now know, the etymology is, with hindsight, incorrect, but it’s at the very least a bit of a stretch, I think.
I mean the etymology as applied to the thing we now know it to be, chrise. I don’t think it quite works though, so I do agree with you. But that’s subject to hearing Brendan’s case for the defence, of course!