This works only to a degree. Reserving judgment can't entirely stop emotional reaction which is the target of many of these info nuggets. Also, it can be really hard to notice that you are in an echo chamber, when e.g. you see a highly liked tweet claiming X, then some reputable newspaper reports X, then someone you personally know and respect says "have you heard that X", and X is also generally consistent with your worldview, it is very hard to reserve judgment.