You're not meant to editorialize titles like this on HN. People who submit stories have no more claim to their viewpoint than any commenter does. The title here should be: "This MMO that promised an 'infinite open world' has become a giant fiasco"
If the reason for the rule is to avoid the submitter pushing through their viewpoint, this particular case shouldn’t be a problem. The “Y Combinator” part is a reason why it’s relevant to this site, and it’s not a viewpoint.
An early-entry comment carries a lot of weight in steering conversation, and quoting the portion of the story citing YC's involvement as well as the alleged fraud would be proper.
Unless unclickbaiting titles or working with arbitrary text (e.g., a Twitter stream submission), changing titles is strongly frowned upon, especially where the source does in fact have a viable title.
I'd lose the preemptory "This" from the original source, but otherwise recommend the original title be used.
(Meantime, the discussion is now derailed by title discussion, which dang will have to clean up.)