Btw 1 foreign worker rarely equals to 1 local. Even just the quality of their work isn’t equal usually and averagely, and language, culture, distance, etc differences are on top of that. Interestingly, who moved to Western countries usually works better than those who stayed, even with the same background. Source: my Eastern European ass, who still waits a project which has outsourced workforce and they really worth it not just on paper.

The Poland that joined the EU is so different from the Poland of today etc. It is subtle and not instant so perhaps younger people don’t see it so easily?

You know why people travel for bigger salaries? Because they want bigger salaries.