Think this is more the people you associate with and has less to do with "Americans".
Not based on the numbers, and I do keep track. To throw a good dinner party I have to keep notes on my guests' work schedules, dietary needs, personalities, and interests. It's part of intelligent hosting and it makes me better able to choose a successful menu and schedule. My mother did a lot of corporate and industrial diplomatic entertaining, and I learned from her. So, there's a science to group entertaining and statistics plays a part. Demographics can be relevant.
I'd estimate my statistical sampling size at well over 250 households each of which might represent an individual, a couple, or a family. The people I invite over are educators, local business owners, adult grad students, people in the skilled trades, various kinds of professionals mostly of the medical, legal, or nerdy persuasion, former military, co-workers, neighbors, business associates, and people I know from sports or from various charitable volunteer activities. I try to avoid politicians and direct marketers due to the odor. The age range is from about 25 to about 60 although some bring their kids. All of them are people I've known for a while, and none are spur-of-the-moment invitations. Some of the parties I throw are for birthdays or wedding showers.
Of the people I've invite over, I'd say roughly 80% of them are born and raised in the USA. The other 20% are half foreign nationals (on a work, student, or visitor's visa) and half are US citizens who were either born or raised in a country besides the USA. If rudeness were distributed uniformly, then if it were simply a question of interacting with the wrong class of people, I'd expect to get about 1/5 of the rude behavior from the people not raised in the USA. But that's far from the truth, even when I compare people of similar socioeconomic background.
Over the nearly 18 years I've been entertaining under my own roof, I have only ever had three special food requests from people raised outside the USA. One related to a food allergy, and two related to religious food prohibitions that I was already aware of and that I planned around. When I entertain Americans, I can expect special food requests from more than half the people I entertain. Some relate to allergies but the vast majority are fad diet related. The same goes for deciding whether to attend the party at all, or texting or playing with gadgets during the meal. (Before or after the meal is OK, in fact being able to look up a fact during an argument is vital). So far 100% of the substance abuse related behavior has been from my fellow Americans. Because of the sampling I'd expect only about 80%. I'm not saying that not one of my guests with significant other-than-American cultural exposure ever abuses substances. I'm saying they don't do it while they're guests in my home.
I'm not saying the rudeness from people of non-US culture is zero. It's not true. Lateness, for example, is a thing in some cultures, and I've had guests who like to live the stereotype. But overall the rudeness is substantially less than the expected value assuming a uniform distribution of rude behavior. My conclusion so far is that the distribution isn't uniform.
Speaking of "uniform", I very seldom have trouble getting people raised in US military families to RSVP or show up on time. That is a very pleasant statistical outlier.
Here's another unexpected statistical oddity: kids. I don't have a huge number of kids, babies, or teens dining with me, but the ones who do have been uniformly American raised. They are nearly always as well behaved as their parents, and far better behaved than many of the adults regardless of national origin. They are seldom anywhere near as picky as the adults.