When you echochamber ya got 'em right where ya wan 'em. Cut off from the rest of the world. Only echochamber exists and is real. Everything else that may exist outside is of no value and is there to trick them. So they happily stay within echochamberland and cling to one another therein and are happy as clams at high tide. Safely secure in a "good" environment that will not pollute their brains with, well, contradictory ideas/views/beliefs/thoughts. The echochamber dwellers need never fear hearing information that will contradict/challenge what echochamber controllers tell them. It is forbidden.
