It’s completely acceptable to not want to hear about major plot points when a game has only been out a month or so, but folks getting mad about stuff that was in promo materials and you can learn before you even start the game proper have really got to recalibrate.
I want to play FF16 but can’t until it comes out on PC, in a good year or two. So am I on game forums or posts about FF16? Nope. I even avoid twitter threads (or did when I was still used twitter), after clicking on one and finding out about a character death randomly, that everyone there knew about because they were playing the game and assumed everyone reading it was, too.
If you’re going to a place where people are talking about a game, you had best be prepared to be spoiled. If you’re not, stay off them until you’ve played the game. You can’t police people talking about minor or funny events in a game they figure other people know about, just because you haven’t played it yet.