Here's a thought: Trigger warnings are about marketing. They have nothing to do with writing and should never be considered during the creative process. After a work is complete--after the writer has gone into "the smithy of her soul" to pull out everything demanded by the work--then and only then should the piece be looked at for possible content that might offend. But any such adjustments would be for the sake of marketing. To identify problem areas for particular market segments. If Joyce had done that, Ulysses would be a comic book. Art is nothing without freedom. Thank you for writing this thoughtful piece.