They said “what difference does it make?” and the similar Obama said “you didn’t build that” are one of my automatic off-switches for paying attention to conservatives. If they are too stupid and/or ill informed to have never seen or understood the context of either of those quotes (both mean opposite of what conservatives claim, of course), how valuable can any of their “information” be?
If he knows what he’s saying isn’t true then he’s a liar. If he believes what he’s saying then he’s an idiot.
Hillary Clinton was being asked what motive the attackers had for killing four Americans. Her response to that was “What difference does it make?” And she was right; there was no acceptable motive that would have excused the killings.