I downloaded the entire subreddit for /r/conspiracy using timesearch. https://github.com/voussoir/timesearch this includes all the submissions and comments to date.

I'm currently downloading the rest of the comments from 20th August. The database file is currently over 6.5gb and I estimate that it will take a few more days to download the rest of the comments for /r/conspiracy

If anyone is interested in this let me know and I will create a torrent for it and post it in the comments the magnet link.