This isn't a political partisan issue. For once, both many Democrats and Republican leaders, as well as public health experts, are in agreement.
That was a similar case with the previous examples I provided (for what that's worth).
When it was "music is causing kids to act in these illogical ways", and when it was "there's a correlation between excessive video gaming and suicidality"... those were both scenarios where there was something of a "united front" among the two parties. (when it was music, it was Al Gore and fellow senate democrats up there with the republicans grilling Dee Snider about whether or not Twisted Sisters
We're not gonna take it song was encouraging violence and rebellious behavior, when the topic was video games it was senators Joe Lieberman and Kohl right there with the republicans grilling people on the topic of video games)
In each case, they had their own "special experts" willing to give their "expert" testimony (I use the quotes around the word expert because psychology isn't a hard science, it's a soft science where there's all kinds of room for subjectivity and countervailing theories)
In each case (and I feel the same is true with social media), it was just the latest iteration "
How do we explain this undesirable and unexpected behavior our kids are exhibiting?, we need to tie it to a "thing" that can be the target of our ire, and it has to be a "thing" we're not responsible for"
As I noted before, while social media can maybe marginally exacerbate existing issues to some degree, I think the real fault lies with the fact that society as a whole haven't done a particularly great job preparing the younger generations for things in the realm of adversity, setbacks, criticism, rejection, and failure.
For lack of a better comparison/analogy...
Consider the difference between how an 14 year old - with 3 siblings, and who's parents have more modest means - reacts to not getting what they want, compared to an 14 year old only child - who's never had to share and never been told no - being told "no, you can't have that" for the first time.
The former is more likely to take it in stride and not make a big deal out of it... the latter is going to stomp their feet, lock themselves in their room, and yell at their parents and say "you hate me!, why are you ruining my life?!?!"
Over the last 15 years we, as a society, have been raising a lot more of the latter, but instead of material possessions, it's been more in the realm of emotional coddling.
If this was really a case where social media was solely to blame (or even mostly to blame), why would the impact on suicidality be generational?