For a kid growing up in a rural area with few opportunities to socialize without driving for miles, Facebook and texting were a genuinely great way for me to have a social life.
Of course, with algorithmic feeds, nobody posting original content any more, ads, and blogspam links radicalizing my relatives, Facebook is not longer a good place to socialize. Even when people do post original content, it's hard to see because it gets buried behind oceans of promoted content and ads. But I think I can safely say that an older incarnation of Facebook had a positive mental impact on me.
https://www.wsj.com/amp/articles/facebook-knows-instagram-is...
More direct to your question: Not necessarily anything more than their research, but something that details what specifically their research shows and what those research methods were?
FWIW: I did end up finding a nonpaywall version, and the research wasn't super reliable / great. They asked people specifically how instagram made them feel, which is subject to a lot of biases and not a solid objective indicator. I understand it may be the best we do, but that's not a great reason to trust it.
Probably, the collapse of nuclear family in western society and ultimately the sexual liberation. Personal circumstances aside, statistically speaking.
If you mean the US (as per $DEFAULT_COUNTRY), it's kinda hilarious to see that you call this ‘massive political instability’.