Please stop putting spoilers in titles or as pictures and marking it as ‘discussion’

increasingly i am noticing posts that clearly spoil the show with the picture/s on the post or in the title of the post. this really spoils the show for those of us that are watching the show for the first time slowly making our way through it or rewatching it after many years and can’t remember what happens. would really appreciate the correct use of flairs on posts - marking spoilers as ‘spoilers’ and not ‘discussion’. thanks in advance