[wizzwizz4]

> Something else is going on,

Large groups have broken into smaller groups because people are less required to be a part of a large group to be accepted.

[ta2162]

>Large groups have broken into smaller groups because people are less required to be a part of a large group to be accepted.

I'd say the opposite: disparate groups have ceased to exist as they got consolidated into the larger group. You see this more often across all cultures as the information age has come around.