The cost of health care and rent, as well as a chaotic political system, has these children of immigrants leaving the American dream behind to live elsewhere.
IDK, every generation has had challenges to face. If this generation thinks the answer is to move away and everything will be fine and dandy, I'm afraid they're mistaken. You're going to have to earn it and put in hard work, no matter where you go. And while the US has some issues that get magnified, the grass is rarely greener on the other side.
Moving away does make everything better depending on where you move of course. The thing that's difficult about it is the move itself, you need money at the very least and many countries have strict requirements for allowing folks to move there.