I don't think all movies do up-close quick-cut camera shots during fights. I'm fairly certain the reasons they do that are not because it's trendy, but because

I don't think all movies do up-close quick-cut camera shots during fights. I'm fairly certain the reasons they do that are not because it's trendy, but because of other constraints. Things like a lack of actor training, time for practice or reshoots, or good choreography in general. It's what they can use to get away with these things.