> Maybe Google can try replicating Reddit in YouTube
They can't. Google as an organization just doesn't understand social networking.
They've had comments and forums (community?) for ages. Do you know how to engage in that community? Do you know how to even track your own comments? Etc.
> Do you know how to even track your own comments?
On YouTube actually yes, it’s in “History”. :P
Maybe Google can try replicating Reddit in YouTube - it would just be serving text instead of video; discovery would be via their recommendation algorithm, i.e. no subreddits. Frankly, they can kind of already do this, you can post community messages on YouTube. They just need to tweak the algorithm to recommend such messages.