Officially, "trivia" is off-topic. But it's a poorly-defined category that we should be able to replace with more specific reasons. Can't we do better?
I'm not the first person to be unsure of what "trivia" means.
This question asks for a better definition of "trivia", but never got an accepted answer. The top answer starts with "I'd rather trivia of all sorts be allowed". As adminstrators, we should either (a) post a better answer, or (b) accept the suggestion and allow trivia.
This question also gets close, asking "where do we draw the line?", but the accepted answer is way too short to answer such a complex question. There are a couple of trivia "examples" but no explanation as to why they don't belong on the site.
Part of the problem is that "trivia" is a subjective term. We use it as a blanket to disqualify questions we don't like, without specifying the true reason that the question should be closed.
Could we replace "trivia" with some more specific "close reasons"?
For example, we could explicitly exclude questions that "already have an answer on IMDB". Excluding them as "trivia" just hides the true reason we're excluding the question.