One can assume many angles to it according to one's own thinking. But, the thing was that, animal sacrifices were a regulatory measure. They were aimed at regulating meat eating, the same way the institution of marriage is aimed at regulating sexual activities.
But, as a result of it, did the meat eating among Hindus go up or come down? It went up and over the roof. Instead of hundreds of animals, now millions are getting slaughtered. This is the ground reality.