I don't know if it was a bot account or not. Maybe? If it was, I got fooled by it once. It replied to one of my posts in another thread. I felt the reply was insightful and made a valid point. Of course, it could still have been a bot. Or maybe a person falsely accused as a bot? I legit have no idea.

I worry that over time it will get harder and harder to detect bots by content, and attempts to do that based on meta-info will further erode privacy. It always risks sweeping up real humans. Especially those with a more formal writing style. I have changed my own writing style to try to avoid that. As somebody on the spectrum I always wrote with a very bullet-list style, sometimes even using sub-heading in longer posts to structure them. That is exactly what bots do. So I now I don't!

There are "LLM detectors", but those have poor accuracy. then there are "humanizers" who try to modify writing to avoid triggering the LLM detectors. It's a mess.