A more positive one would be those people actually got better at their skills and improved as people. I'd like to think I'm a better person than I was in high school.
But if you're constantly exposed to their social feeds, you would have the data and probably know better. :)
From my observations, some industries (film, for instance) will give people a chance, then get rid of them if they don't work out - so a lot of people I vaguely knew had very brief acting careers.
Other companies seem to trundle along with really dysfunctional leadership, for a variety of reasons. Sometimes, I suspect it's because the explicit aim of the company (say, mining) is not what the company is actually doing (say, some kind of rent extraction) so it doesn't matter that the CEO has no skills to speak of.
Also, when you know the people, and you see like an interview they've given, you can usually tell if they're bullshitting.
It’s sad seeing a guy who was in the “gifted and talented program” with me is apparently now a janitor who posts pictures every day about what concert or sports game he’s at and he’s always alone. I was excited for him because he took a picture with a woman and I thought he’d met someone but it turned out to be his sister.
So I guess I use social media for the exact reason you don’t like social media. Nobody’s supposed to like that stuff, but I mean, why else would you care what everyone else is doing other than to compare status?