I see frequently, discussions of tags, and what to tag. And as a reader, the tags can be frustrating as well, not knowing if a tag is something prominent in a story, or just briefly mentioned.
A suggestion is to create an entry for "secondary tags". For tagging things that are only peripherally mentioned or encountered in a story. This would allow authors to tag things that may be triggers for some people, but if entered as a "primary" tag, would cause other readers to avoid the story.