One good measure is that in pre-AI world the person creating a piece of information normally used more time to create it than the person consuming it would need to consume it. Writing used to be slow, reading is fast.
So, when I see an AI wall of text without any editing, I assume that the author did not bother spending their time on it, but they want me to spend more of my time on reading it than they spent on creating it, and I refuse. Everyone has access to the same AI, and if I want to read AI generated text with little to no human author involvement, I'll go ask ChatGPT or Claude.
Same goes for GitHub slop PRs which are faster to create than to review.