Your reply sounds like a cheerleader chant. :D Did the common person benefit from this "lift" that you mention or merely the technocrat who was willing to do the bidding of the new master?

Yes, it lifted everyone. Take a look into any stat on minimum/median salary, standard of living, HDI in any Central or Eastern European country that joined the EU against those that didn't - the gulf is massive. Also having lived in one such country before and after joining - yes, the EU helped lift everyone upwards.

The eastern europe will lose the most in long run, because the EU caused a massive brain drain.

For the west it’s just a matter of money. The demographic crisis in the east is real.

The demographic crisis is real in the Eastern European countries not in the EU (Western Balkans, former USSR) too, but at least the standard of living has massively improved in the EU member states.

"Eastern" Europe shouldn't exist, it should be just Europe. How is there a demographic crisis in the east?

> How is there a demographic crisis in the east?

Net emigration & a fertility rate of 1.7 is what I’d call “demographic crisis”