Sure it does. This is a community of individuals who share common interests. If the community values a particular comment, there's a high probability that I'm going to find value in it as well because of those shared interests.
And conversely, if I consistently find that the community values comments that I think are junk, I'm probably going to eventually leave the community (which is why I'm here, and not on certain other sites).
If my personal interest + the comment score < arbitrary threshold, i quit