Yep, it's frustrating. Youtube comments really are hopelessly broken.
Re-shares are not good reading. They are written by users for their followers, not for the people on the actual video page. As you said, they have zero value.
When I first noticed this way back when Google started publishing re-share comments under the videos, I would reply to those comments with remarks such as "I already knew that; yes I know what the video is; why are you repeating the video name"... and some people responded with "what are you talking about" because they didn't even know their re-share comments were being published on the video page. That's how broken the comments are.
There are two types of YouTube comments. There are comments from random people on very popular videos. Those are often an excuse for people to say something with a big audience, and those comments have usually been of low quality. The other type of comment is when there's a small community around some particular niche subject or particular content creator. And there the quality of the comments can actually be pretty decent, because it's not just drive-by comments from random folks. Unfortunately, YouTube's comments changes have generally targeted marginal improvements on the quality of the first kind of comments to the detriment of the second kind.
If by "before" you mean 2008, then yes, arguably. Starting around 2009 I've started using various browser extensions to hide the comments, and I've never been happier.
No. To sift through the comments you want to read, you need to at least read a few words/sentences of even the unwanted ones - that wastes time and makes us slow.
Hilarious. I recall saying to myself YouTube won over Google video because they supported comments early on. They really understand social. Laughing at myself...
Re-shares are not good reading. They are written by users for their followers, not for the people on the actual video page. As you said, they have zero value.
When I first noticed this way back when Google started publishing re-share comments under the videos, I would reply to those comments with remarks such as "I already knew that; yes I know what the video is; why are you repeating the video name"... and some people responded with "what are you talking about" because they didn't even know their re-share comments were being published on the video page. That's how broken the comments are.