I don't know how many of these to take with a pinch of salt...
Greetings, Ghostwatchers. Fandom naturally engenders a protective atmosphere. Even fair-minded criticism can be instinctively resisted, and often-times repelled by fans of their particular, chosen following. Far too often, opinions are misconstrued as personal attacks, testing the cotton-swaddled bonds of joy & emotional connectivity through uncaring logic. In my experience, topics often ripe for heartless joy-shredding include spaghetti hoop continuity, blisteringly outdated political commentary, or the media in question otherwise not standing-up to the test of time [i.e. the crushing realisation that your favourite show was actually always a bit shit].