If the only animal corpses anyone ate was euthanized pet remains and the practice was somehow free of influencing the unnecessary euthanization of more pets, I can't say I care. Same way I don't really care if people eat roadkill or animal products from a dumpster. I'm not going to do it, I don't see these things as food. And I think there's a minuscule harm done in the proliferation of the perception of these things as food. But that harm is negligible in the face of animal agriculture which is my primary concern.