That's a niche even among people who read fan fiction, which is a niche among people who read long texts online which is a niche among people who read the anglophone internet which is a niche among people who were on the internet when that type of "discourse" was popular which is a niche among people on the internet now.
You can (and probably will) quibble with any one of these but of course this is a niche. Thinking it isn't is commonly what people in a certain bubble end up believing, though.
You can (and probably will) quibble with any one of these but of course this is a niche. Thinking it isn't is commonly what people in a certain bubble end up believing, though.