I personally think the over-emphasis on (in the majority of cases individual) trauma is just an easy way out for society as a whole to intrinsically "forget" about its implicit "tasks", such as taking care of its constituent members.

It's easier to instil in someone the feeling of "you're depressed because you have been abused as a child, and if you don't remember the abuse itself it doesn't mean it isn't there, otherwise you wouldn't have been depressed", than to solve real societal issues that are more likely causes for said depression, as I've heard almost no-one say "we'll cure mass depression by making housing more affordable or by providing free child-care".