I don't see what's wrong with that when the product is good. If people willingly spend their money and realise its stuffty they'll just not buy it anymore no matter how much they love the person the pizza is advertised with. I'd get it if it was something extremely expensive, but I doubt the pizza is worth anything more than the rest.
I also don't see how you come to the conclusion it's stuff, i'm willing to think it's just because it's branded with a known person you don't like, though.