I commented this elsewhere, but it's worth repeating because actually reading the author's arguments (granted, in other writings, not OP) will allow you to see he's considered this point and is will to accept that causation works the other way around.
It's a fair point. But what explains the uptick in depression and mental health issues starting around 2012, disproportionately impacting pre-teen girls and not contained to any geo. The author's entire point is that social media is the only explanation that that has been proposed [1]. Moreover, it's not a far-fetched explanation. He very aware that correlation does not provide causation, and that it could be the other way around. However, no one (according to him) has offered up a theory which explains the data like the social media theory does.
It's a fair point. But what explains the uptick in depression and mental health issues starting around 2012, disproportionately impacting pre-teen girls and not contained to any geo. The author's entire point is that social media is the only explanation that that has been proposed [1]. Moreover, it's not a far-fetched explanation. He very aware that correlation does not provide causation, and that it could be the other way around. However, no one (according to him) has offered up a theory which explains the data like the social media theory does.
[1] https://jonathanhaidt.substack.com/p/social-media-mental-ill...