My only point was that when it does happen, someone should be able to flag that post and have a mod fix it. Like we used to.
You still can. Nothing about the current spoiler handling rules says you can't raise an issue with a moderator and ask them to fix it.
If anyone sees what they think is a spoiler in a thread that isn't set up for spoilers or anything that they have a problem with, hit the little triangle next to the post to notify the moderators on it.
We may not agree with your assessment, and we'll make our own decision about what to do but we will look into it.