Culture correlates strongly with nationality, you are throwing away a very powerful tool just for an ideological reason.
And no, often it is too late once you have already made the mistake, first impressions matter and you massively improve your chances if you take their nationality into account. Sure they might take your nationality into account and adapt to you instead, as you say that often works for you, good, but some people actually wants to learn to adapt to others.
"but some people actually wants to learn to adapt to others"
Yes. And I said I don't want to learn by fixating on nationality. Not that I don't take it into account.
And the quote above from the cover already talks about "asians". Even less meaningless. Not completely meaningless, but allmost. And all I read about the book seems like strongly fixating on nationality. Maybe it goes deeper at some point. I only judged from what I read. And I am aware of the potential irony given the topic, but so far I think, I understood enough.
And no, often it is too late once you have already made the mistake, first impressions matter and you massively improve your chances if you take their nationality into account. Sure they might take your nationality into account and adapt to you instead, as you say that often works for you, good, but some people actually wants to learn to adapt to others.