I'm confused as to why AI spammers haven't at least started trying to hide their AI posts a little to make them sound more human. example; replacing "you" to "u" and not having proper grammar. This probably wouldn't entirely fool an AI detection test but at least they would look a little more realistically written by a human than AI.
Because that would require extra effort and the whole reason shitposters are using ChatGPT is to avoid having to commit any effort at all.