alt Hacker NewsYeah, I suspect that a lot of the decline represented in the OP's graph (starting around early 2020) is actually discord and that LLMs weren't much of a factor until ChatGPT 3.5 which launched in 2022.
LLMs have definitely accelerated Stackoverflow's demise though. No question about that. Also makes me wonder if discord has a licensing deal with any of the large LLM players. If they don't then I can't imagine that will last for long. It will eventually just become too lucrative for them to say no if it hasn't already.
Discord isn’t just used for tech support forums and discussions. There are loads of completely private communities on there. Discord opening up API access for LLM vendors to train on people’s private conversations is a gross violation of privacy. That would not go down well.