The gestation crates are far more disgusting than the "piglet smoothies." Pigs will happily eat their own kind if they happen to die, in the wild or in open pens, and I can't summon additional outrage over making food out of animals that were being raised for food anyway. There's nothing "cruel" about that specific thing.
I'd like to see more concrete discussion of potential health hazards, mad-cow-style. That should've been the #1 point, not an afterthought to projecting human morals onto animals. And, of course, the animals' living conditions continue to be genuinely disgusting, cruel, and inhumane; but we've all got outrage fatigue over that, so activists need a novel angle ("piglet smoothies") if they want to get people talking (or get featured on BoingBoing).