User blog comment:TDA15/ADMIN POST: PLEASE READ/@comment-26865399-20150915200019/@comment-460966-20150915200327

They will get a ban of they spoil information. Everyone knows this by now. Some people spoil anyways. People will avoid the Wiki if they get spoiled, not if there's no spoil.

If people did not care about being spoiled, this would not be a rule. Majority of the users on the site want this to be a spoil free zone and it shall stay that way.