Yeah, I'm using it to describe the more abstract phenomenon of people seeing patterns where there aren't any (pretty sure there's a closer-fitting word for that, but can't recall it off the top of my head) instead of literally...but it illustrates the point. :yep
Plenty of light-punching Eastern Europeans. No, I don't see your point. People are people. There are punchers the world over and slick boxers the world over, and people who are neither the world over, in more or less even distribution.
Probably genetic. I think they are generally naturally strong. I've heard comments from people who are surprised by how strong some Russians are, not sportsmen either, just regular people. Obviously this isn't always the case, they have some weaklings and average strength people too. It's also not just EE's though, apparently Pacific Islanders are generally strong too. Africans also. I've heard Latino's and some Asians are very strong and powerful P4P too. Basically I think strong, powerful people are like that mainly because of genetics. Training obviously helps too.
Strength doesn't always translate into punching power. But the Eastern Europeans are hands down the strongest people on Earth. They dominate strength competitions. So yes there are some genotypes that seem to have genetic advantages in certain areas of athletics.
Korobov doesn't hit that hard. Glazkov doesn't hit hard. Lomachenko doesn't knock everybody out. Usyk is no KO artist. You are generalizing from three or four exceptional cases. Trust me, there are a lot of boxers back in Eastern Europe who don't hit hard and you never heard of because they didn't make it big on the world stage.
Crushing cans doesn't count. Everybody pads their record in the first fifteen to twenty fights against easy to knock out guys. Was he a knockout king in the upper amateur ranks though?
That's like looking at Matthysse, Maidana and Chaves and asking why Argentinians hit so hard... Or looking at Joshua, Haye and Frampton and asking why Brits hit so hard...