There wasn’t a lot of good source material to use a couple months ago. I’m unsure if that has changed, but it might’ve. It’s a prerequisite for writing a good wikipedia article, at any rate, as opposed to a shitty one.
You’re not allowed to write your own telling of the story on there, you have to copy other people’s and cite them. So a lot of other people need to have written on it, from a position of being a reliable source, before a quality wikipedia article can be written.
Though a small, mediocre article can be better than no article, if you’re giving someone a good framework to improve on later, as more sources develop.