It'd be common sense for a hunter.
You shoot in one area, they run away. You shoot in the other, they run back.
Honestly my first thought was "Bambi." I remember that scene from Bambi.
I am not a hunter but have been on many, many, hunts on 4 continents and and never ever heard of such a thing or saw it.
Chances are he scoped out the event layout, knew where people would be trying to exit and which streets they would be running down, which streets LE would be arriving on and just wanted different shooting vantage points for maximum effect.
He knew he wasn't going to be ducking behind the wall like in the old west shoot outs because NO ONE was going to return fire into an occupied hotel.