"Where is the term coming from suddenly"

I don't think it's new, I've been hearing it my whole life

"and why is it used to uncritical?"

I ... can't figure out what this means.

In this thread it's thrown around as if everyone is referring to something specific related to immigration.

Edit:// checked US news. I can see what you all refer to now. To explain media seems to assume the US is having a "brain drain" because of fleeing scientists, some other countries make fun of it and call it their "brain gain"

In New Zealand the brain drain discussion has been going on for decades. We are remote, have a limited economy, wages are low. As a result, many smart kids graduate from university, go travel overseas (particularly Australia and the UK), find jobs with better wages, and never come home. It's referred to in the media as the brain drain.

Nearly every country besides the USA has been experiencing "brain drain" to the USA since at least the end of WW2, and discussing it for just as long.

In from central Europe and that concept is new to me, as in a existing problem after ww2.

Might be just a language thing then.

https://en.m.wikipedia.org/wiki/Emigration_from_the_Eastern_...