I kinda disagree with the general sentiment of the article. IMO the author mistakes a low context social style for imperial tastelessness. I, a Korean, lived in the US for a decade so I do have experience with this "imperialism" the author tries to illustrate.
However, the American behavior the author is describing is more attributed to how American social norms don't force anyone to "read the room" and "know your place". At least, not as much as Italians and Koreans. Americans have simple rules they abide by, like general etiquette and the constitution. And Americans are brought up to neither refrain from nor judge others acting within that boundary.
So I don't agree Americans are "tasteless". I find Americans to be more tolerant and accepting, at least compared to cultures with longer history. And that is the American "taste" in my opinion. This has its cons, one of which is someone from my culture thinking they are oblivious to others around them.
Fun fact: this probably originates from a viral Korean dude who actually walked to a car wash because it was close. So this is a case where a human actually failed
We just hope Americans realize some day that the world is not taking advantage of them like Trump wants them to believe.
Korea is very dependent on America but this is a mutually beneficial situation. We are their customers and they are ours. Except Korea is more desparate so the US can afford to rip us off or kill contracts whenever it feels like it. We are always thankful to UN allies and the US for freeing SK from NK but Americans are not here to save us. They are here to snoop into beijing and control the pacific ocean.