Remember the beautiful young girl who left Shangri-La with the man she fell in love with? Remember what happened to her? She aged and died once she left her magic world that kept her young and beautiful.
Well staying in the Alternate Reality neighborhood will be the only thing that will save its occupants from experiencing the real truth honest no-lie reality and dying from the horror of it. They have no intention of leaving that safe haven where they will never hear anything upsetting. All is calm. All is good. Nothing to fear here m'dear. Sleep well. You are in safe hands. Nothing can harm you as long as you never stray.