I recently noticed some questions tagged with movie and it seemed off. Upon visiting the tag, I saw that its wiki is an awful circular definition followed by a short list of sci-fi elements that will never be of any use to anyone. There is no guidance on how to use the tag.
Searching Meta, I saw this older discussion about them where the general consensus seems to be that they are bad tags and not useful, possibly excepting the case where the question is specifically about the format itself and not about an instance of the format. (That is not how they are being used for the most part, at a glance.)
On the other hand, apparently the consensus is to force movie upon any question concerning the new Hobbit films. Besides a hypothetical use of search that seems uncommon (IMO) and probably not useful (what of questions that are relevant to multiple media formats?), I'm not sure why this is being done or why it's departing so far from the earlier discussion above.
So did I miss something? Why are we halfheartedly using these bad tags and not making any attempt to educate users about them?