I'm wrestling with this right now. I only use LLMs for design and exploration because I am not employed and can't pay for a subscription right now, and they make the design phase feel like less of a fever dream because checking my ideas doesn't involve hours of scanning search results online and trying to see how my ideas fit with what exists or trying to evaluate if my ideas even make sense, so I feel more encouraged to get started on working, but I often wonder if the prompts are being sycophants
In one case recently I explained a garbage collector design I had been toying with a while ago, but couldn't find research related to my idea or really evaluate if my idea would work. After enough arguing with the prompt it finally "understood", started praising my "novelty", and when I later asked for research related to it I was given a paper that already implemented most of my idea
It was a funny moment of seeing how it was clearly trained on too many online forum comments (simply mentioning reference counting got it on this whole awkward line of false folklore about memory management) before switching to sycophancy, to finally showing me a paper