Short term perhaps, but long term having a non-indexed community is inconvenient for newcomers.

That's why Ritchie is very active on, and often refers to, Stackoverflow as well! Exactly to document frequent questions, instead of losing them to chat history.

microsoft copilot can summarize discussions. with some orchestration it could extract even from past discussions question+answers and structure them in a stackoverflow-like format.

source: we use this feature in beta as part of the enterprise copilot license to summarize Teams calls. Yes, it listens to us talking and spits out bullet points from our discussions at the end of the call. It's so good it feels like magic sometimes.

note on copilot: any capable model could probably do it. I just said copilot because it does it today.

there are projects that you can use to index discord servers, unfortunately a lot of communities just don't use them.

Why would they? A person who picks Discord has no idea what knowledge discovery is.

by community do you mean all the people who make an account just to ask a question on the project's discord, only ever open it to check if someone answered and then never use discord again?

Forums work really well for this. I personally avoid using Discord because chatrooms are too much of a time suck. There's far more chaff to sift through and trying to keep up with everything leads to FOMO.