Yeah, but LLMs still consistently don't follow all rules they're given, they randomly will not follow one or more with no indication they did so, so you can't really fix these issues consistently, just most of the time.

Edit: to put this a little more clearly after a bit more thought: It's not even necessarily a problem that it doesn't always follow rules, it's more so a problem that when it doesn't follow the rules, there's no indication it did so. If it had that, it would actually be fine!