Those crazy echo chambers
As David Roberts put it,
There is no "echo chamber" more closed, more immune to outside correction, than the echo chamber of self-styled non-partisan technocrats.That captures the irony. These same people -- the center-right echo chamber -- are in fact the ones who make the "echo chamber" accusation most often, of people to their left and right.
Of course, you can't convince them of this. If you could, they wouldn't be the echo chamber.