Whats the purpose of the archive tags?
The purpose is to identify subjects that have been the subject of substantial, recurring debate in significant sectors of fandom and provide an easy way to warn for those subjects (though a choice not to warn is always acceptable as well). We also decided to limit the archive tags to a small number of subjects out of concerns for enforcement. Concepts like “dubious consent” vary substantially from person to person, and we decided that we could not reasonably expect fair enforcement of a rule requiring warnings (or a signal that the author chose not to warn) for concepts beyond those listed in the archive warnings.