There's got to be a pithy way of describing something so stupid that an adult person couldn't possibly believe it unless it was in their direct personal interest to do so. Like, "kernel mode" isn't even a particularly clever or interesting form of prompt injection, and probably predates a lot of the current preprocessors. It's the most blatant version of "it scared me after I told it to tell me a scary story" I think we've seen yet, and while that would be one thing for a young person on a forum it doesn't strike me that this one's had much time or incentive to grow up.