There are definitely small ideological, well-off pockets of Europeans, who enjoy living in high safety net countries and don't really want to trade one develope

There are definitely small ideological, well-off pockets of Europeans, who enjoy living in high safety net countries and don't really want to trade one developed country for another. They don't necessarily have the skills to draw high US tech salaries either. But for the vast majority, like you said, the US is extremely attractive.