For one thing, they're all chicks. Women in groups tend to very conformist--that is, very intolerant of differences or dissenting views. Since libraries and reading itself became increasingly abandoned by males, it's been taken over by various female groups. The national, establishment groups tend to be the most Communist and hysterical, since those were targeted by Reds who wanted to get ahead first. Library Science itself and Teachers College Columbia, which I think had a lot to do with shaping it, has had a very odd, perverse agenda for a long time. Partly this is because of the influence of Child Psychology ideas derived by people who a) didn't have children; or b) were so crazy and ideological, they screwed up their children.
Good observation. Thanks