I had 2 guys pull off the road and park right behind me along the Madison River a few miles inside Yellowstone National Park one fall day several years ago. I’m not exactly sure what they were filming but they spent quite a bit of time getting their camera gear set up before they waded across the lower end of the pool that I was going to fish (wearing shorts and wading shoes) and then they made their way into the thick trees and brush that line the bank there, and they disappeared into the thicket. From what I could see, neither of them carried any bear spray, and they were more intent on making sure all of their camera gear and filming equipment was in hand.
As that is prime grizzly territory, not to mention the other wild animals that you might stumble onto in that thick growth or trees, that’s pretty risky to into that place in any circumstances, and more so without always carrying bear spray. There’s a name given to people like them, and it’s not movie or film makers, it’s Tourons - tourists who are morons.
Unfortunately, there are 1000’s of tourons out there on the road and around us every day. Fortunately, I was still there a couple hours later when those two guys made it back to their vehicle a couple hours later, not looking much the worse for their filming experience. (Another guy who went into the woods just a few miles from there a couple years ago, who was planning on doing some photographing and fly fishing, was severely mauled by a grizzly, and later died.)