youtuberacism

I don't think so. All custom channel urls like that link back to a YouTube channel, not a video. If you get a big enough channel, are you able to choose whatever namespace you want and whatever it links to?

Edit: see https://support.google.com/youtube/answer/2657968?hl=en

Interesting, never heard about this, but wouldn't this be applied to the original YouTube video's url? Seems to only happen when you go to youtube.com/herobrine. Also, it's on a very popular video. My best guess atm is that someone early in YouTube's existence, before they got big and audited everything, made this easter egg and it wasn't found until now. I see no history of this easter egg anywhere

This is live. Right now. Verify for yourself.

This should never be allowed to happen. I'm surprised this wasn't caught earlier. It's clear Google needs to remove this asap.