Secret suppression is extremely common [1].
Many of today's content moderators say exceptions for shadowbans are needed [2]. They think lying to users promotes reality. That's bologna.
[1] https://www.removednews.com/p/hate-online-censorship-its-way...
i can't see how shadowbanning makes things worse for good-faith users. and evidently it does work against spammers here on HN (though we don't know if it is the shadow or the banning that makes it effective, but i'll believe dang when he says that it does help)
It's about whose messages are sidelined, not who gets discouraged.
With shadow removals, good-faith users' content is elbowed out without their knowledge. Since they don't know about it, they don't adjust behavior and do not bring their comments elsewhere.
Over 50% of Reddit users have removed content they don't know about. Just look at what people say when they find out [1].
> and evidently it does work against spammers here on HN
It doesn't. It benefits people who know how to work the system. The more secret it is, the more special knowledge you need.