Tried a red dot on a shotgun once. Did not care for it. When people have such an intense aiming focus point then tend to do just that, aim.
In my years of clays and wing shooting, I could not tell you what my front sight picture looks like. All I know is I am focused on the clay or target, not on the sight.
Most days shooting waterfowl are pretty poor weather, combine with with optics and you have a recipe for foggy lenses, water drop obscured sight pictures plus all the other vegetation that falls into the sight. I good bright hi Viz front sight will accomplish all the things a red dot will do, and more.