Prove it.
I don’t need to: I’m not the one who’s wrong. That’s your problem.
But, off the top of my head: children exposed to complex trauma - not simple trauma, but complex trauma - will develop coping strategies in place of healthy baseline personalities.
As they move into adulthood and begin to widely experience normal, healthy relationships and interactions with others, the coping strategies they carried with them will conflict and eventually break down.
Because this persons childhood never involved the creation of a healthy baseline personality, they’ll have no idea how to deal with the loss of the coping strategy and the break down will be catastrophic in degree, and dissociative in nature.
This situation has a large percentage of suicides.
There will be exceptions, but not many.