Question, have you been an immigrant? Do you know any immigrants?

When you immigrate into a country, all of a sudden all of your reflexes are wrong. Some are obviously wrong. Some are more subtle. It is overwhelming, and too much.

While in retrospect it is easy to say that they should prioritize some things over others, in practice they tend to learn from experience after people respond badly, and those who are a little more used to the culture explain why they are wrong. And the experience of being told that they are wrong all of the time will make many hold on to some of their old habits extremely strongly.

Don't criticize how slowly immigrants adapt to a new country, until you've been an immigrant in a foreign culture.

I was an immigrant to a new country. I made an effort to learn the new rules. The immigrant adapts, not the country.