Either way, super disappointed thatI think it's the latter. There will probably be something in the story that justifies it, if it happens.
Vision uses the hammer first if true. Cap using it in Infinity War would've been great as a series climax, not to mention Cap almost lifting it at the party seemed to be implying that he'd be the first person who wasn't Thor to be worthy. It'll probably still happen and be cool as all hell, but it's gonna seem a bit redundant at that point.