I noticed @cegaton had closed this question as duplicate using his gold cycles tag. Just playing the "devil's advocate" I am in no way questioning @cegaton.
Consider some hypothetical question, which has been mis-tagged with nothing-to-do-with-the-question
The "issue of law" as I see it is, what if I edited, and removed the mis-tagged nothing-to-do-with-the-question, because when searching by tag we don't want to come up with a result that has nothing to do with the tag, the question couldn't then be closed by a user with a gold nothing-to-do-with-the-question tag.
What if it already had been? I'd feel then that I'm questioning someone that knows more about nothing-to-do-with-the-question by removing the tag.