I don't think there are many subreddits that praise and love law enforcement more than the_donald. They used a Media Matters hit piece to censor and contain one of the most popular subs, for purely partisan reasons.
If I make a sockpuppet and post the same comments in r/politics, does that mean it should get quarantined?
A lot of those screenshots are "1 point, 11 minutes ago" or "2 points, 17 minutes ago". If that's being expanded to cover an entire subreddit, then no sub would be safe when applied consistently.
Age is not a good determination of sockpuppetness, at least with competent opponents. Past activity might be, since that at least costs something, while age just costs prep time.
I don't doubt that many of the accounts screenshotted in the article linked are actual, active accounts on /r/The_Donald. I doubt that you can usefully distinguish real accounts from fake ones for the purposes of identifying false flag attacks in other subreddits.
My impression reading the article was the more blatant the call to violence, the lower the score. I haven't exactly done a proper study of that, of course.