Hmm, some LLM text is hard to detect, sure.

Some is also horribly easy. If the text is full of:

- Overly positive commentary and encouragement

- Constant use of bullet point lists, bolding and emoji

- This quaint forced 'funniness', like a misplaced attempt at being lighthearted

- A lot of blablah that just missed the point

- Not concise and to the point, but also not super long

Then that really screams ChatGPT to me.

I think it's because this seems to be the default styling of ChatGPT. When people tailor their prompt to be more specific about style it's a lot harder to detect but if they just dump a few lines of instructions about the content into it, this is what you'll get. So the low-effort slop is still pretty easy to detect IMO.