Would it be appropriate to use the post description to add "Actually, X" to posts where there is a conflict between what's fact, and how the image has to be tagged to comply with the TWYS rule?
For example, I recently saw a post where the character is factually male, but is tagged female (and those who tag it otherwise shall be silenced), merely due to having female proportions (which, as a trap character, is entirely the point).
I think it should be allowed if it doesn't effect the tags.
Updated by Beanjam