Given scene/plot descriptions from movies or TV shows, and given a specific question about the scene, summarize the question into a title

I've noticed a trend recently where, in a particularly violent scene, blood will end up on the lens of the camera. It's not restricted to blood; it could be water, if it's a particularly stormy scene, or mud in, say, a battle. Any kind of liquid, really. The point is that the scene is usually pretty charged.  Has this become fashionable and, if so, why? I don't recall seeing this as much when I was younger -- but maybe I just didn't notice -- and, for me, it breaks the suspension of disbelief. I presume the production team are in control of the filming enough such that they can choose if or when this happens, rather than it being accidental. Is it a meta thing to try to suggest to the viewer that the scene is so chaotic, that even the producers can't control it?
Blood on the lens