I would like to know if text is LLM generated even if I can't tell from the content itself. For me it's a matter of attention (hah) and a quality signal. The poster expects to spend a minimal amount of effort on the post, and all the readers will have to spend the same amount of attention whether its LLM generated or not.

To me, it's disrespectful to expect someone to waste their day reading every word of a blog post when even the author has not read every word. It shows that you value your time over your reader's time.