So I took the words of Jordan B. Peterson to heart and not only cleaned up my room, but also my computer. I was subscribed to over 500 channels and after deleting some minor channels, who haven't uploaded anything in years + literally everything to do with video games. (I am 24, time to move on) I noticed something.
Some channels without a custom profile picture appear on the sidebar on youtube, when you tab that button on the upper left.
They weren't visible, when I just clicked on https://www.youtube.com/feed/channels
because that only shows channels that are neither deleted or banned.
Anyway, so the short story is that basically every single minor alternative right-wing channel I was subscribed to, got banned for violating community guidelines or hatespeech laws.
I don't remember them, because again those were minor channels that often uploaded compilations, short meme videos, basically something any user could have done, but how would you even know that, if you basically don't have keep those channels open in permanent tabs on your browser and view their content that way, instead of just getting updates through the subscription system.
This happened very recently, because I remember very clearly that one channel "Cato speaks" still had videos online, while I was going through all of my subscriptions and cleaned them out and shortly after that, it was an empty channel.
Other channels I vaguely remember where Tacticalbowcut, Jimbo"something" and others. Even just now the secondary channel of Die Vulgäre Analyse was banned for violating community policies.
For a short time youtube was kinda glitchy and I could actually still see those banned channels on the sideline, even though I used it to unsubscribe from them. If I knew I was going to make this thread, I would have just posted a screenshot, but you just have to take my work for it and look for yourself.
TL;DR Youtube mass-deleted alternative right-wing channels from anons with youtube account who upload content. You would probably never know that, because you only get reminded that a channel exists, if it uploads.
To share knowledge I invite you to tell your anons here more information about what those channels actually were and if you can still see them appear in your subscriptions.