I worked with someone who sincerely believed he was spiritually co-evolving with his army of sycophantic AI agents (the agents would be tasked with discussing his thoughts at night and collaborated to give him morning reports about his progress). He would publicly write about how relationships with friends and family collapsing was a natural consequence of being so "advanced". I also never once saw any meaningful work done by his team of "agents", they existed solely tell him how smart he was (of course he specifically set up the system to 'challenge' him but... in practice that didn't seem to be working).
I suspect there are a lot more people quietly going through something similar but keeping it to themselves better.
I would distinguish this type of behavior from people who over ambitious views of what can be accomplished with AI.