All of these kind of products from the cookware to the grocery products, more often than not are purchased because someone is a fan. They make nice gifts for fans of what ever star has their name on the items. Some people enjoy receiving those kind of things. It's fun and it makes them happy. Same with any other type of collection. If they don't even know who the person is, or they don't like them they probably are going to buy a brand name instead.
But the food network star lines have been HUGE sellers. So much so the Network started it's own line with Kohls. So I guess she is just getting in on a little of that.