So true.
Abandonment of traditional values and religion has left people moorless and lonely, easy pickings for the latest dangerous, self destructive ideologies of the moment.
This has often happened before but self destructive ideologies don't survive and thus leave little imprint on the historical record.
People that follow them leave little imprint on the genetic record too as they have few if any descendants.
It is no coincidence that successful ideologies promote having children.
It is going to get interesting going forward, as in the past cultism was relatively contained to localized communities, but now the ability to connect, organize and manage is global.