The media reaction to the number of guns is typical I guess. They just seem amazed that anyone would have that many firearms and their tone of voice is just "why would anyone have that many". They just got done saying the average is 8 per gun owner. Two were supposedly mounted on tripods. I expect the full auto one was one but a bump fire wouldn't work on a tripod I wouldn't think and don't believe any of the types they identified would fit on one.
While I personally don't see the point in having 23 in the hotel room when you can only possibly use a few of them, the number owned is not many compared to collectors or some hunters for that matter. I had that many before i started collecting military firearms and they were just for hunting, shooting, or investment purposes. It's not that hard. Having to supply two kids, you need three deer rifles, three squirrel rifles, three shotguns as a minimum. I have a couple of small ones that the kids basically outgrew that are being kept for grandkids.