And they'll be fine, because it won't affect their reputation, that's not how that typically works in this industry. Lord knows I've worked with plenty of people that were attached to projects that "failed", never saw the light of day, companies that folded, etc. It's never the fault of a single person when issues happen, or a few. It's generally a much larger issue that revolves around the company, the communications, how things are handled, etc. But it also depends on the role, the individual's full background and experience, etc. A good interviewee can see through nonsense.
If a candidate has a path of continuous flawed projects, then yeah, it may show some flags. But asking the right questions and getting the right answers will typically show if that person is a reason, core problem, etc. But folks that worked on Jedi Survivor are not going to have issues in their career because of in-game performance, I assure you.
My name is attached to games that have varying outcomes. Some very successful, some minorly successful, some not at all, some with performance issues, etc. But I'm by no means in a bad position.