I don't know how long the feature has been on YouTube, but it might be relatively recent. And that's the feature of shadow-banning comments. Quite egregiously (well, depending on your personal perspective, I suppose) channel authors can affect this shadow-banning. "Shadow-banning" means that your content is secretly and silently censored behind the scenes in such a way that you yourself still see it completely normally, without any indication that something has been done to it, but it will be hidden from everybody else so that they won't see it. YouTube has at some point implemented this for the comment section of videos (something that people, including myself, have corroborated via extensive testing): If your comment gets shadow-banned, YouTube will still show it to you as normal, as if it had been successfully uploaded and is there for everybody to see, but it will be hidden from everybody else (something that you can corroborate by viewing the comment section ...