When you say a thread "only invites forbidden replies"
But there are several replies and none of them are of the "forbidden" type, is that really a good justification for outright deleting a lament (on GD) about being ghosted because it falls into the "Religion, Sex, Politics, [or] any social issues, though some exceptions may be appropriate" category? Note that posts calling people trash are considered acceptable by Boards mods, and video posts in M&G (there's a specific rule against it) are also considered acceptable by Boards mods.
I think Boards mods need better training and tools to ensure consistency and avoid bias. This would help posters figure out in a logical, deterministic manner what kind of posts are and are not acceptable and make Boards a better place for everyone.