Morgan, leave it be. Site policy and the ability to hide tags has already been confirmed, and unless there's some change there's little point in beating that horse. dpf has already confirmed that things like rape and the more blatant triggers are already tagged as a matter of course.
If you cannot trust the site or the author, you are absolutely free to not read either. Although the option of reading the discussion before you read the story is open to you as well, which will usually point out things that are not tagged.
In any case, there is zero point in continuing this discussion after everyone has said their piece multiple times and policy has been confirmed by the person who administers it, again multiple times. So can we all refocus the discussion on the actual story at hand, please?