I get your point, I really do, but Homefront was also about the economic collapse of the American system caused by its own corruption.
I always got the idea that Korea wasn’t incredibly overpowered united, but America was already broken and a step away from being conquered already and the first army to invade happened to be Korea. The rest of the world just wanted to see what would happen.
Kind of like having Russia invade Ukraine only to have it’s nose beaten in and globally embarrassed. Doesn’t mean Ukraine is going to invade and conquer, just that a global super power can be defeated by a smaller united nation after decades of corruption.
At least that’s the idea that got me through the game. It was honestly just a COD reskin of a game and wasn’t actually that good in retrospect