The point being that if people moved from depending on YT and instead had their own circles of friends, at least one or two being technical then comments would be under the control of those people and not YT. If your circle of friends don't like particular comments, they can remove them. If you want up/down votes on your videos, you can implement it. The control is back in your court and the rules are entirely up to you and your friends, within the laws of your nation of course. Your friends don't have to upload videos and you don't have to watch them. I am of course assuming that you and your friends share similar interests, but really this is about control. YT has full control of their systems and always will.