Haidt's rebuttal to your argument of spurious correlation:
https://www.afterbabel.com/p/phone-based-childhood-cause-epi...
https://www.afterbabel.com/p/phone-based-childhood-cause-epi...
I stopped there. We're talking specifically about teenage depression and the cited study is adults. If Haidt wants us to take results from one subgroup and apply it to another, he has to provide evidence. That's how this process works.
[1] https://docs.google.com/document/d/1w-HOfseF2wF9YIpXwUUtP65-...
Perhaps considering where he does so, further in the article which you stopped reading.