If the principles were clear (ie: spoiler tags necessary for Animal Crossing Bells events that have not happened in real time yet or spoiler tags necessary for posts that contain items that have been attained via hacking to circumvent timelocking) perhaps users would not accept it as a personal assault on their play mode when individuals asked they use a spoiler tag.
Instead of feeling sensitive about a perceived conclusion about time traveling could only be a simple"hello this is contrary to the rules, see sidebar".
(Edit: it is fine to downvote that in the event that you're an avid TTer and do not wish to mark spoilers or something. Just trying to provide another viewpoint in this thread that's asking for comments )
The things that produce my own Reddit feed and top the list on sexy following the sticky are varied on Buy Nook Miles Ticket topic so I would not say there's an issue with shared occurrences that community upvoting and downvoting doesn't already solve.