It was posted 3x to the Privacy@lemmy.ml community. Or at least it looks to me like 3 different accounts posted the same thing to this very community.
I don't really care about how it works, I'm just tired of the chan-esque experience where I have to question my sanity because I see the same posts every day.
Just because people that don't actually participate in a given community, thus not seeing the older posts, share the same article because they look for a community that fits and dump it there.
Some subreddits had bots that detected and removed reposts and guided OP to the original post for them to add their discussion points.