Just so you guys are aware, the point of those bots is they do the comment repost and once they get upvoted they edit their comment to provide links to a fake subreddit that contains links to Trojans/phishing software. It becomes wack a mole because when one account gets banned for malicious links, the runner has others to either edit their comment or start the next post.
The con they run is kind of complicated and they've been doing it for over a year.