:::If somebody adds an unreferenced template, we can't just delete it.  That's not nearly as bad as, say, removing an AfD template from an article you don't want deleted, but still.  Ignoring the template can result in some admin walking by, taking objection to a completely unreferenced article, and putting it up for AfD.  The fact that the other articles haven't had that happen to them, doesn't mean others won't.  As for why the template got added in the first place when other articles haven't, you'll have to ask Powergate if you want an answer on that end.