Meta moderation sytems open up a new can of worms though. Slashdot comes to mind: since they changed the site a couple of years ago they have almost made it impossible to read lower rated posts (you literally have to click through a dozen times on large threads) and it's basically impossible to get rated if you're not logged in, which means both manufacturing consent and hiding the often most interesting content of dissenting voices (valuable e.g. in whistleblower type situations, people posting anonymously due to employer etc.).

Also, some TLA with a large staff and sophistaced bots will overwhelm such systems by numbers. They could build up lots of personas to the level this is possible, then use them while building the next batch to replace any fallen ones.

I don't think this is going on here yet, the noise isn't very sophisticated