This type of thing often lives in the issues / discussion tab of a github repo now a days, for better and worse.
I think most relevant data that provides best answers lives in GitHub. Sometimes in code, sometimes in issues or discussions. Many libs have their docs there as well. But the information is scattered and not easy to find, and often you need multiple sources to come up with a solution to some problem.
A lot of valuable information lived/lives in email threads that might or might not be publicly archived.
Yuck. I don't know if it's just me, but something feels completely off about the GH issue tracker. I don't know if it's the spacing, the formatting, or what, but each time it feels like it's actively trying to shoo me away.
It's whatever the visual language equivalent of "low signal" is.