I do want to say one more thing -- I do not think that adding "TW" or "Trigger Warning" at the beginning of a thread title is asking very much. Or even using the trigger icon if you don't have enough characters to write "TW" or "Trigger Warning." Literally, instead of making a thread titled "I'm scared of Coronavirus," you can say "Trigger Warning: I'm scared of getting sick" or something like that. All it is is a simple message to let the reader know that it may be bothersome.