So this afternoon a person in #ALIFE2025 's demo hall was explaining to me how they used an LLM to bounce ideas of domains they weren't familiar with.
It reminded me of when @lspector came to give a talk in my lab, back when I was a master student. He said something that left an impression on me: "all my cool ideas I had while having a beer with someone else".
So I guess that is something that "brainstorming with LLMs" steals from you. You're not having that beer with someone else anymore.