Well instead of throwing away this perfectly good food it could be distributed to the soup kitchens or via St. Vincent de Paul for the needy. People have been known to eat dog food out of a tin, which is generally good horsemeat itself.
There is no health and safety risk, it doesn't affect any one's religious beliefs and it's demonstrated that they are on the ball food safety wise. I'm sure that I've eaten horsemeat somewhere as has practially any Irish person whose gone abroad. Anything like burger or sausage or even soup is always going to be suspect. I particularly remember 'beef' burgers in Majorca years ago. They were of no type of cow that I recognised. My other half has eaten suckling pig, he got the ear, he's seen eyes in soup, eaten sea snails, and had to drink soup via a staw in Hong Kong. So horsemeat doesn't sound too bad. He tells me frogs legs taste like Chicken.
Down all my local supermarkets I can get rabbits, veal, horse, snails, frogs legs and other things you don't want to know about. All side by side with beef, pork, chicken and lamb. There's also live lobsters. I think you can get dog in Korea and maybe rat too, or would that be in the Indian on Parnell square or the Chinese on O' Connell street. So I think horse meat I can certainly deal with.