AI output right now is like a final exam essay response from an anxious student. Instead of being edited for focus and clarity, it's anti-edited to cram in as many details as possible. Instead of worrying that the reader might get bored or confused, it assumes that the reader has no choice but to read the whole thing, even if they get a headache. It doesn't care about picking the most useful perspective on a problem; it cares about covering every possible angle that a grader might use to dock points from it.
It's basically the work you get from a smart, diligent person who is oblivious to any shared goal and approaches every assignment with a CYA attitude.
It's not a bad attitude given that I don't trust it did the work right, so the more details it can include, the more opportunities I have to spot errors, which invalidate the whole result - and conversely, if all details seem right and self-consistent, it gives me greater confidence the work is correct.
It's because so many of these models were trained on corporate content, which is the exact same vibe. "We're going to drone on for pages about how great we are for building the thing without explaining what it can do for you or how to use it, because spending real effort connecting with our customers isn't something we ever learned climbing the corporate ladder"
It's basically the work you get from a smart, diligent person who is oblivious to any shared goal and approaches every assignment with a CYA attitude.