There's a particular sting to being passed raw, unfiltered output from the LLM hose. I think you're onto something with the mismatch in expectations (I was expecting a conversation that led to insights we might both share, and the other party was expecting to answer a question quickly without much thought).
I think there's something deeper than that, too. Almost a feeling of betrayal? I cared in part because I thought everyone else cared, too, like we were working towards a common goal. Asking a question in search of shared understanding only to be passed the modern equivalent of a LMGTFY link hurts in a very particular way. I thought they cared about this, too, but they're only trying to get the bag. I get it, times are difficult right now, but it doesn't make it hurt less.