I had the hot dog pizza. it's not very good, but it's honestly not crazy in the slightest. in Italy many pizzas have piece of sausage on 'em. korean "pizza" in general is honestly disgusting, I could never get into that stuff.
that hummus stuff though.. that should be an offense punishable by public humiliation. whoever had that idea should never touch food again, ever.
donut sandwich is pretty good, I made one myself recently. especially with fried chicken.
We're used to it. Some foods, however, go above and beyond.
fast food is kind of the wrong term, imho. it should be junk food.
a salad is fast food. so is a cheese platter with sourdough and grapes. so is a banana. or an instant miso soup. none of these are problematic.
fast food is just everything you can whip up very fast. junk food is essentially food that will damage your body if you overeat on it. it's food that violates almost all rules of nature in terms of caloric density and amounts of lab-built substances in it.
"hyperpallatable" is a supremely good choice of words, seeing as how eating a lot of junk food literally makes it impossible for your body to digest real food.
also, junk food is almost always made so that it doesn't take any effort to eat nor chew, that you can keep on snacking infinitely and that you can digest it as easy as possible (just a byproduct of lack of fiber, because the people who make junk food don't want you to ever feel
full)