User blog:Arthur199/Why can't you make articles for Scooby Doo fanfictions?

I have a serious question to ask. We have articles of cases in the Scooby Doo comics on this wikia like Glittering Ghost so why can't people post or create articles for fanfictions taking place in the universe of Scooby Doo? Since this wikia is all about Scooby Doo after all