So the infamous "shadow ban" actually does exist on Twitter, based on this screenshot. I remember them actively denying this two years ago when a wave of shadow ban incidents hit German news.

Where do you see a shadowban option on that screenshot?

"Search blacklist" is one of the things that indicates a shadow ban (per https://shadowban.eu/). Lower left corner in the screenshot.

Shadowbanning people is a form of psychological abuse. To be honest it should be banned by law.

I just vouched for yet another HN user who had been posting insightful but [dead] comments for at least a month, and I couldn't even find the bad comment that triggered this.

It just makes me sad that I see people spending their energy on good comments, unaware they're not being read by most people.

Reddit mods are truly overly censor-friendly and ban-happy - and a bit bemused with the power that being a mod gives them over others.

Might want to email the mods if you come across such stuff...

Isn't this literally what the "vouch" button is intended for, though?