Isn't this what the slack search bar is for? I was sceptical of using it at first but I often find what I'm looking for by typing in one or two key words and restricting the search to certain channels that likely have the information.
I don't see any official response yet from Github. Surely they're already looking at it? However, users wouldn't know that so I'm sure they're getting a ton of duplicate support requests, tweets and github comments that wouldn't otherwise be necessary.