this is simply an explanation of how to roll this into the changes that i suggested in the other thread, and how to help add a universal symbol for "hidden content", the read more button. i understand that we have a working function for this already. i am simply proposing all sensitive content be wrapped under a single system so as to allow the systems to be more easily understood by users.
EDIT: as far as i can understand your post it is "we already have a feature for this, why improve or iterate on it" and the answer is, simply, to improve and iterate on it to make it better, to unify hidden content with a single, global UI to always be recognized as 'this is sensitive, hidden content"
why would we ever want different UI? if anything we could have a symbol that is added to the content warning field that when hovered over, says "content warning dynamically added by filters, not part of original post", or just that text. i do not see why there should be different UI, and in fact disagree and think there should be one unified symbol/feature for hiding content.