Including contaminating food? What's with this straw man? Pig waste might be a problem but how does that justify feeding food sources with it? Are you comfortable with the notion of feeding other non-seafood food sources (such as pigs) with it too?
Again, all the context necessary is provided in the article. I'm not against finding a solution to the "pig waste problem." I don't think feeding it to food sources is a logically sound primary solution any more than feeding children radioactive waste is (for the "radioactive waste problem").