While the original Puritanism is gone, it left behind a set of tools and tactics and strategies that "in" groups can deploy to bludgeon "out" groups. That's why

While the original Puritanism is gone, it left behind a set of tools and tactics and strategies that "in" groups can deploy to bludgeon "out" groups. That's why we see revivals of behaviors that look suspiciously Puritanical - it was simply very good at its job.