Secondly, they also have large numbers of participants from a range of backgrounds with a range of motivations. The subreddits they are discussing tend to have 10s of 1000s of followers actively engaging in various levels of harassment, I doubt that's a single sock puppet.
Thirdly, do you have a source for anything you're claiming?
Finally, if what you're saying is true then someone is posting child pornography to Reddit. Regardless of his intentions we should be concerned about that.
The user revealed their name in an interview here: https://www.fastcompany.com/3026860/a-brief-rundown-of-the-s...
According to one of the sources linked in a sibling comment, this user was arrested for domestic violence. A quick look at their user profile shows they are the top mod of r/garland, which isn't far from where the arrest occurred.
That's how I read the original comment.