Number one, Sean Hannity isn't the one putting together news footage. Some flunkies in the back are.

Number two, this isn't incompetence, it's shitty policy and corporate laziness. I suspect it happens a lot. Really, would it even occur to a news footage film splicer to do this if they didn't think it was okay to do it? Or maybe even routine?

I've seen this kind of thing once or twice in stories that I had personal knowledge of (space related) so it was easy for me to catch out that some of the footage was stock.

I remember seeing news shows years ago where stock footage was labeled on screen as "stock footage." For those who still watch the news a lot, do they still do that?

If anyone still trusts popular media as a primary source, they're making a mistake.