There are a lot of things in US that feel like pleasantries - the tipping culture promotes this sort of thing.
As an American, I disagree with the "servant" class attitude that you found in America. It is completely opposite, in fact, in a bad way sometimes. Middleclass Americans feel entitled about being able to do certain things and if that privilege is taken away, they will create chaos. In general, Americans have enterprising values - work hard, be pragmatic, meritocracy, avoid formalities and generally have intense sense of optimism. Americans engage in risk taking, especially in the upper middle class.
10 core American values: https://www.andrews.edu/~tidwell/bsad560/USValues.html
It is not a perfect place, rather a mosiac of various cultures. I've visited India (spent 9 months) and the diversity in India is quite staggering - literally every state is like its own country. However, there is little race diversity and internationalisation. America is a land of immigrants, good tolerance to other cultures and the idea of individualism is deeply rooted in the soul of this nation. Korean person could be found eating at an Egyptian restaurant, both the person and the restaurant owners are Americans. In India, I found almost casual racism - literally everywhere from advertisements to how the North (light skinned) treats the South (dark skinned) Indians.
Of all nations I've had the chance to explore and understand - Japanese culture has the most "hierarchical" notion of society. I've worked with Japanese engineers who are afraid to speak up or mess up in order to avoid pissing off their superiors. The "servant" attitude you speak of - that is fully manifested in Japan - as a lifelong duty to serve others, excel in what you do and expect nothing in return (no tips in Japan). I admire certain aspects of it and it creates a peaceful harmony in the society. There are Japanese terms to explain it more clearly, I can't recall them.