Also the infrastructure which allows Reddit to exist is not. All those scaling issues they've "solved" over the past ten years? Have fun with those if you're trying to copy and paste the repo..
That is necessary but not sufficient. The design is wrong.
No, the voting algorithm is not open sourced.
Re:Deleting the golang subreddit
by chromakode on Friday November 25, 2016 @01:17PM
(#13038741)
Reddit is 100% open source: https://github.com/reddit/reddit