Why would any meat-eater criticize someone for eating a roasted pig fetus?

Some people are shocked that Nigella Lawson said: "When I was in Spain, they aborted a pig for me and roasted the foetus. Soooo good.”

If women have a right to abort a human fetus, but killing a born human being is an extremely serious crime, and if we kill born animals for food all the time, and very few of us call that murder, why would extracting a pig fetus and using it for food be a problem at all?