Skepticism against AI text detectors on HN is as old as time, and frequently comes from people with some vested interest in filling up the internet with slop when you look at their business ideas / projects / blogs. I've done systematic testing on human and LLM-generated text and I'm confident that the accuracy is higher than 95% (and that <5% is almost exclusively false negatives).

You shouldn't crucify people based on this alone, but if it reads like AI, quacks like AI, and is detected as AI, it's probably AI.