They are definitely scraping the barrel. I got one. Meanwhile, my account was wiped of comments (and a lot of my comments were very anti-reddit and/or pro-fediverse). The account has been dormant for several months. I had fairly high karma, but mostly from 2 or 3 dumb/funny memes that the hivemind loved for whatever arbitrary reason of timing/ subreddit.
Reddit always had a weird vibe / momentum to the votes. Say the dumb thing in a fan service way and they eat it up. Gallowboob was the master manipulator, but it wasn't overly difficult to get lucky and pick up 10k to 20k upvotes with a single well-timed pithy remark or predictable joke.
Also, if a comment got early down-votes it tended to keep going in that direction, even if the comment was adding to the discussion. Simple momentum, even with vote fuzzing in play. Occasionally you'd see one bounce back up if others called out the BS of the down-votes.
I'm grateful Lemmy doesn't aggregate karma. Keep posts and comments self-contained. Fresh start on every new thread!