Earlier quoted context omitted.
What is it about partaking in or witnessing the killing of animals or humans that makes one more connected to reality?
In Japan, some sushi bars keep live fish in tanks that you can order to have served to you as sushi/sashimi. The chefs butcher and serve the fish right in front of you, and because it was alive merely seconds ago the meat will still be twitching when you get it. If they also serve the rest of the fish as decoration, the fish might still be gasping for oxygen. Japanese don't really think much of it, they're used to it…
Not to mention the millions of Americans working in the livestock and agriculture business who see up close every day how food comes to be.
A significant portion of the American population engages directly with their food and the death process. Citing one gimmicky example of Asian culture where squirmy seafood is part of the show doesn't say anything about the culture of entire nations. That is not how the majority of Japanese consume seafood. It's just as anomalous there. You only know about it because it's unusual enough to get reported.
You can pick your lobster out of the tank and eat it at American restaurants too. Oysters and clams on the half-shell are still alive when we eat them.