Earlier quoted context omitted.
Many Europeans regard Americans as insincere in social interactions. I suspect many of these "tips" would fall very flat outside the USA. Americans always want to be your best friend, then it becomes clear at the end of the conversation that it meant nothing to them. Kind of a shame as it masks genuine kindness.
I agree that there is something like an Overton window in social interactions and that it is centered at different points of the continuum in different cultures. Still, for some people at least (me!) thinking about where I sit in that window in my culture is interesting and I hope helpful.
The driving ideology is in direct opposition to genuine, casual, unmotivated concern/interest.