At the bottom of this very submission are a bunch of dead comments that are very obviously LLM-generated.
Ok, you and I can easily spot LLM text. So what? The Turing test has still been passed, as is clear by people falling in love with ChatGPT, not believing something is AI, and by continuously claiming this or that is a bot.
People, many of them at least, cannot make this distinction anymore. You can, I can, but people as a whole are having problems with that.
And that is proof that all LLM comments are easily found out? Also, easily found out by average humans? (this is not a average forum here)