It's indeed a similar systemic behavior as the one that produces ineffective posters in Earth schools: Once an Authority knows how their captive subjects should behave, Authority will instinctively order their captives to behave like that! It just feels really good to order people to be the way you think they should be! Very few Authorities would have the strength of character to resist that temptation, especially if their surroundings reward rather than punish them for giving in to that temptation.
Also in terms of Eldrida-specific phenomena, a noble sees little point in trying to hide knowledge of what causes a fraught relationship, even if it might otherwise be more useful to let people be taken by surprise, when the nobility already talks about that topic so much.
Also also, it's a rare Authority who doesn't think they are super good at having highly fraught relationships. Why, their life experience on the topic makes them a super expert! One way that an Authority can share this incredibly valuable expertise is by ordering a new poster put up after their most recent breakup.
