This is because you are reading comments of people that write comments. People that write comments, (usually) read comments. There are lots of people that rea

This is because you are reading comments of people that write comments. People that write comments, (usually) read comments. There are lots of people that read comments that don't write comments and probably even more that don't read comments and click on the links. For the last group, the votes and number of comments are just signals for how good the link is - they don't care about the comments.