Yes, but I actually sort of prefer the way this incentivizes sharing of interesting links with the community. That is, the only way to get the stuff you don't like off of the front page is to share something better!
Moreover, it indicates that getting the stuff you don't like off the front page is not something to strive for. If you don't like it, ignore it. It is a sign that at the moment, the community here has found nothing more interesting to show you.
I can't say I've seen a link I disliked so much that I felt the need to hunt down something to help drive it off the front page. This incentive seems dubious, and if real, the benefits dubious.
