Isn't that down to just subreddit curation? Go look at askscience or askhistory, the top level responses are always relevant or they get deleted by the moderato

Isn't that down to just subreddit curation? Go look at askscience or askhistory, the top level responses are always relevant or they get deleted by the moderators. Nothing stops someone from making askprogramming that has that level of curation. The problem just becomes incentives, in that getting experts to write informative responses for free is hard, and once SO rating stopped mattering (like how reddit karma never mattered) people stopped trying to participate.