I hid my YouTube Channel which should have deleted all my comments. I waited a couple days, and yet I still see my comments in my Comment History page. Checking the comments on the videos themselves shows they are still there, although the username is missing and the avatar is default. I think I've seen comments like this before. So is this normal, then? And do I really have to go through every single comment I've made in order to make sure they're gone for good? Or is it because I needed to do it through "New" YouTube, as I'm still using the old layout? Thanks.