I think the way Giant Freaking Robot works is they publish as many unverified rumors as possible, in the hopes some will prove correct and they can crow about being right all along.
Yeah, it's pretty obvious when you look at a handful of their articles, too. They love to add 'our trusted and proven sources' in them, especially these Star Trek ones. They hyperlink those words. You click on them and you're taken to a list of the stuff they've claimed that's turned out true. If you look at that stuff for longer than ten seconds, it's mostly things that they themselves didn't break the news on.
More telling is what isn't on the list - namely, the vast majority of their alleged scoops, including Star Trek. El-oh-el.