I recently saw a reddit thread that was a repost, and every comment was a bot reposting the comments from the last time it was posted. And in the middle of that, there was like a single human commenting on it, not realizing he was intruding on a karma farming circle jerk filled with bots.
I’ll try embedding the image, if it’s too compressed to read I can upload it somewhere else:
They probably don’t mind repost bots. Reposted content is still content, and can be used to attract new users. And the repost bots specifically target popular content, meaning their reposts often do really well.