From the Help Center > Asking:
What topics can I ask about here?
Science Fiction & Fantasy Stack Exchange is for questions targeted towards science fiction and fantasy enthusiasts. This includes questions about:
- Plot, character, or setting explanations
- Historical or societal context of a work
- Behind-the-scenes and fandom information
- Story identification
- Franchise/series reading or viewing order
It says it right there, people. Questions about behind-the-scenes and fandom information are indeed ON TOPIC. However, I have often seen these questions discriminated againt simply because some users don't care for them. For example:
- Into which house was Rowling sorted? was closed, reopened, and closed again as off topic when it really is on topic, falling under fandom info.
- What has been Harrison Ford's attitude toward Star Wars?, What has been Alec Guinness's attitude toward Star Wars?, and Kenny Baker's attitude toward Star Wars each had some backlash for some users who erroneously belived that fandom information wasn't on topic, when it really is on topic. See also Laine Liska’s—and everybody and their cousins’—attitude toward Star Wars
Did Harrison Ford ever tell fans he used to be himself, and why? was said to be off topic in some of the comments, with some users sounding like they were threatening to VTC.
https://scifi.stackexchange.com/questions/124431/why-does-stan-lee-make-a-cameo-in-the-princess-diaries-2 isn't a very good example, but it could fall under fandom information (but I do realize it's not a great question).
It seems like some users treat fandom info questions as off topic. Why is fandom information treated as if it weren't on topic?