Fine, cittasano, we will never agree, so let us agree to disagree. Just to clear up one point: Those who you say have no choice as to what to eat, do in fact have a choice as to where to live. As now deceased comedian Sam Kennison used to say in his comedy routine regarding starving Africans: "The reason you are starving is because you live in a desert! Move!" So, your argument that these people don't have a choice does not hold water.
In a Dhammapada story Buddha demonstrated the lengths to which he would go to " cause no harm" to sentients. He was born a Prince and knew that if he became a king that he would be responsible not only for punishing his people for crimes, including the death penalty, but he knew that he would have to command armies, which involved killing his kingdom's enemies. He knew that such actions would cause him to end up in the hell realms, so he pretended to be retarded and appeared to be incapable of being crowned.
My interpretation of this story is that Buddha would do anything to avoid doing harm. So, why would I ever believe that he would eat or support eating the flesh of sentient beings.
What Makes an Elder? :
A head of gray hairs doesn't mean one's an elder. Advanced in years, one's called an old fool.
But one in whom there is truth, restraint, rectitude, gentleness,self-control, he's called an elder, his impurities disgorged, enlightened.
-Dhammpada, 19, translated by Thanissaro Bhikkhu.