We could argue that modern technology-oriented cultures are even stretching the social fabric.

I'm nobody but it seems that survival made most mammals social, but we don't owe our survival to the group now, but to a blurry and large system. So why bother with people when I can swipe for all my needs /s

But the thing is, as an ex introvert I can understand, dealing with people is not easy. Just like dealing with love, intimacy, marriage, existence is not easy. But we used to try to find solutions of better quality. Not just "i'm out".

If that were how it worked, we'd expect Utah (the state with the lowest divorce rate) to have very low levels of depression and anxiety compared to the rest of the US. That is not what we see. I don't think it's realistic to say that the alienation of modern society is because we allow divorce.

Not a valid conclusion — you’re not controlling for all other factors that contribute to happiness, such as weather, social environment, local opportunities etc.

Definitely feel free to do all that work if you think there's a case to make. While I agree it's not an exhaustive analysis, I think it's much more rigorous than the comment it was meant to refute.