When I was a kid (12-13), I had a Remington Model 510 .22 single shot w/iron sights that shot pretty darned good. When you're young, you have really good eyes. Back then I could go to Walgreens and buy a box of shorts for 20-25¢. I used to spend a large portion my allowance for ammo, for shooting walnuts, hickory nuts and anything similar that would float, I found in a woods nearby. I'd throw them in a nearby river and shoot at them as they floated downstream. I could pop those walnuts out to about 75-80 feet at times and 25-50 feet pretty regular. I earned about 5-6 dollars a week delivering papers. That's a lot of shooting. I could buy ammo without my parents & no one thought anything about it back then. I still have one of those rifles to this day, although it's in better condition than the one I had as a kid.
Today, even with a good rest, there is no way I could come close to shooting like that.
I gave up shooting with iron sights when I was in my early 30's with nearly everything except my Military High Standard target pistol. Eventually I put a 1.5x scope on it. I was wearing bifocals by then. I've got a Mod. 39 S&W w/iron sights & now I can't focus clearly on the front sight. It's almost shape, bit to shoot well I should be able to see it clearly. Looking through the close-up portion of my glasses I can focus clearly on the rear sight. When I was in my 30's this pistol shot very well with conical cast bullets using Bullseye. If I tried to shoot it at 25 or 50 yards, I wouldn't be able to see the black rings clearly. Maybe I could if I focused on the target, but the the front and rear sights would be a blur, especially the rear. Iron sights are for young ones or those with good eyesight. Sometimes gettin' old sucks.
Probably peep sights (like you mentioned in your article) would work much better, since the small aperture tends to increase your depth of field just like on a camera, but I've never seen peep sights on a pistol before though, The increased depth of field may not work so well with the aperture so far away from your eye.
BTW, Thanks for your article, it's a good one.
Lord, I sure do ramble on at times.