Unsure if OP's friend, but this comment reminded me of this viral post:

https://xcancel.com/GeoffLewisOrg/status/1945212979173097560

> A Prominent OpenAI Investor Appears to Be Suffering a ChatGPT-Related Mental Health Crisis, His Peers Say "I find it kind of disturbing even to watch it."

From https://futurism.com/openai-investor-chatgpt-mental-health