I don’t think the parent child relationship style is the single most important factor in all the changes that have happened since then.
Stagnant growth in wages? Huge increases in costs of housing, education, medicine? Globalization? Change in social customs regarding relationships, marriage, etc? Political shifts?
The fact that problems are popping up exactly 80 years after world war 2 isn't some coincidence. That is in fact completely normal. What is new is that central bankers this time didn't insist on tightening the money supply which means the collapse gets to be delayed again. This means there is now time to experiment and find a solution than start world war three.