I don't think society as a whole should feel responsible. Perhaps those who buy ok/hello/heat magazines and watch the "katie and whoever it is/isn't this month" show should feel responsible, after all, without a market there wouldn't be a product. I also wonder about what must be lacking in peples' lives that they feel the need to pay money to read about other peoples'.
As for peter/Katie, I certainly don't care, although on balance I dislike her far more than I dislike him, but I think they have only themselves to blame if people despise them.