Kids are probably the least impacted by an iron sights rule. They learn fast and generally have better eyesight than adults. Many (and at one point not so long ago, most) kids start learning on iron sights, so they have a lot more recent experience with it than adults. I know I cut my teeth head-shooting squirrels with an iron-sighted pellet gun, and 12 year-old Ozarkansas would whoop 31 year old Ozarkansas in an iron sight shoot-off. “Think of the children” is not a valid argument against this, imo.
If we’re having to choose between cutting back on season length, cutting back on number of tags, or restricted weapons to reduce harvest, I would choose restricting weapons every time. It’s valid to disagree with that or take the position that no change is necessary, but I don’t see how restricting modern guns to open sights is going to cause the cultural death of hunting.
If whitetail hunting in the Midwest thrived under shotgun-only restrictions, I expect western hunting will do just fine under iron. Sight restrictions.