I had a similar experience. We were talking about a colleague for using ChatGPT in our WhatsApp group chat to sound smart and coming up with interesting points. The talk sounds so mechanical and sounds exactly as ChatGPT.
His responses in Zoom Calls were the same mechanical and sounds like AI generated. I even checked one of his responses in WhatsApp if it's AI by asking the Meta AI whether it's AI written, and Meta AI also agreed that it's AI written and gave points to why it believes this message was AI written.
When I showed the response to the colleague he swore that he was not using ant AI to write his responses. I believe after he said to me it was not AI written. And now reading this I can imagine that it's not an isolated experience.
People are unplugging their brains and are not even aware that their questions cannot be answered by llms, I witnessed that with smart and educated people, I can't imagine how bad it's going to be during formative years