Can't watch the video now but partially.

I don't like describing it as cycles because it is too simplistic and pretend it is inevitable, robbing people of agency.

I prefer to think of society as a system where different actors have different goals and gradually lose/gain influence through a) slow processes where those with influence gain more from people who are sufficiently happy to be apathetic b) fast processes when people become sufficiently unhappy to reach for the source of all real world influence - violence.

This happens because uneducated/dumb/complacent people let it happen. It can be prevented by teaching them the importance if freedoms and to always fight back. But that goes directly against the interests of those in power - starting from parents who want children to be obedient.