I think you'd have to evaluate craft and content when making an assesment of any artistic output. And I don't think that issues introduced by a film need to be dsicussed only within the context of a film discussion. Still there is often a good reason for "topics," "categories," and so on. On this site, they are created to focus a discussion, to give it a framework and to provide a coherent organization to various discussions which makes it easier for participants to navigate. Adherence to the structure (at some level) is important I think...
P