Comment by throwaway21_

Everybody is doing that. Even here on the HN you'll get shadow banned - couple of weeks ago whole thread that someone else started just disappeared. I become aware of that only when searching for my own message from that thread. It was semi-controversial issue but nothing in that thread (at least at the time I saw its content for the last time) warranted that. Basically what I'm seeing as a HN is just a view that someone else curates.