Those that I knew who went to Google/Amazon/etc. were more diverse personalities: ambitious, interested in hard problems, wanting a good life, etc.
Those going to Facebook though, I'm not sure I can put it in a polite way. Let me just say, in different times and different places I could imagine them joining a certain type of organization.
I have also noticed FBers have a certain kind of personality. Vaguely utopian but removed from reality with a heavy emphasis on hedonism.
“Fascism should more appropriately be called corporatism because it is a merger of state and corporate power”.
Italian philosopher & Minister of Public Education under Mussolini Giovanni Gentile, who was arguably the architect of 1930's Italian fascism.
He was told about the consequences pretty much from day 1. I don't think anyone at Facebook (especially not Zuckerberg) gets to be oblivious.
The CDC study is a lagging indicator; it describes the trendline of a mental health crisis that's self-evident to practitioners. On the research side, there have been many studies in the last 10 years associating Facebook use with poor mental health outcomes.
The Cambridge Analytica scandal broke out 5 years ago.
Smart, Fun and Nice: there are LOTS of people who have all three; don't settle for less!