I mean if you are going there why take an active part in the shooting of the rifle at all... I mean shooting a elk running at 20mph 1400 yards out with a heads up display, great way to bag your booner...
https://www.tracking-point.com/
In all seriousness I use my rangefinder for archery, and to keep me honest when rifle hunting. I don't shoot beyond my MPBR, which is a personal limit there are lots of others people who can ethically shoot much further. In my case if I range a buck at 180 and he chases a doe out to 250 I'm not adjusting my point of aim that much so to me it doesn't really matter. I imagine if a deer is far enough out that 20-40 yards really matters, and is chasing does and therefore moving you don't want to shoot simply because of bullet flight time. Maybe that's not an issue, like I said I'm not shooting 800 yards at animals.