That's kind of complicated, I think people generally use upvotes both to signal that something is wrong, and to signal that the comment detracts from the debate

That's kind of complicated, I think people generally use upvotes both to signal that something is wrong, and to signal that the comment detracts from the debate. This case is actually an interesting edge case - I think downvoters are of the mindset that the comment might spread disinformation, therefore it's better to hide it. But I actually agree with you here - this is something a lot of people think, it is wrong, and it's better to explicitly have people see the wrong information, and learn why it's wrong. That's why the PEP itself mentions this as a common misunderstanding!