Your fallacy is thinking that all of these kids are miserable. I know a lot of these children and they're very happy. They work reasonably hard in school but then after they get out of school - everything is so incredibly easy. They went to the right schools from an early age which allowed them to get into target colleges which lead to target jobs and good marriages from college or from being in the right social circle (which target school+job allows).
It's mostly people like me who have grinded to high incomes that are the miserable ones. We have had to struggle at each step and had no one to help us at any point in our journey. I struggle to meet anyone with my background in any of the social circles I'm in. (In fact, I never have)
They're welcome to go down different paths. It's about giving them the options from an early age. I never had the option to go to an Ivy League (which would've made my life such a joke in comparison) because I was born into an incredibly poor and unknown area.