WMG is a community created page where the community can post speculations and predictions. It apparently stopped after the Cosmos arc and at that point updating that page would've been pointless since past that we already know what happened. As for the Headscratchers, I do have questions to ask but the comics must be so bad, they also stopped updating it. And by bad, it's so terrible no one bothered anymore to update that article sections. I'm still waiting for someone to do that.
And if not, maaaaybe I might do it myself.