You need to provide some empirical evidence demonstrating what is the true root cause of the increase in mental health problems then.

Probably the first step is to simply prove that mental health issues are also increasing among populations that don’t use social media.

Haidt reviewed those kind of studies in depth before making his conclusions.

Iron poisoning and lead deficiency. They got it the wrong way round. They incorrectly packed every major cognitive process into the neocortex, instead of assigning them each to the correct part. They got the idea of intelligence the wrong way round: The function of the neocortex is dimensionality reduction - the more powerful it is, the simpler everything is. You can't improve anything that easily. You actually broke it.