And what trigger would you tag this as? It couldn’t be religious trauma since it isn’t religious. Or the second one? Because the second one seems like it would just be tagged as horror for genre and not as a trigger, especially since you just called it a horror story.
Yes, these can be considered common. I don’t believe finding a common list past death and sexual assault could be that much of an issue considering that we have psychology and other things that have given us a list. The fact that we’re even having the discussion means that we all know common triggers and why somebody would like to be forewarned. Even just googling a common list of triggers found in literary contexts could be a starting point. We all seem to know the main ones. Anything obscure after that, the person who has that trigger will know that it is obscure and that it may not be that avoidable. Frosted Flakes cereal is a trigger for me, but I’m not requesting that somebody make a trigger warning for “character eats cereal” because that’s not common. We’re talking about the ones that are commonly discussed and asked to be made known.
But, like I said previously, the idea of being able to filter out certain tags for genre would be helpful, as well as an option to toggle off/on trigger/content warnings. Cult isn’t a genre and I don’t believe monster is a genre, so I don’t see where those are going to come in for needing to be tagged as a trigger.