Youtube's system is extremely heavy handed. You can sometimes notice your comments getting shadowbanned if you see the same comment from another account/compute

Youtube's system is extremely heavy handed. You can sometimes notice your comments getting shadowbanned if you see the same comment from another account/computer. And I think you can notice it for other people when you get a reply notification, and can even read the comment, but it doesn't show in the comments if you open the list of comments in notifications ? (Posting multiple comments for the same video seems to be an easy way to get them (shadow)banned. Even more posting links, even when it's literally a timelink to the same video using the mm:so format !)