Words often work like unique signifiers "symbols", often by using them you learn them and dont question it. Thats a neutral phenomenon. It has advantages and disadvantages. Mainly, redlist is as disconnected from meaning as much as blacklist is. Requiring the understanding of what a "car" is, and why they cant "wheel their way" thru a cross shaped road becuse of a colored light being there. (Mabe even "across" may make no sense anymore in the future) It sounds really stupid when put like that, but accessability is important.