I'm sure that is a big part. And different cultures just eat different stuff. See many things considered delicacies and would be untouchable by the poor, that I think are just nasty...
Yesteday I talked with a service lineman who had gone overseas to French Guiana and saw a mud fish, sitting on a rock of course. It had lungs, it walked/crawled, jumped in the water and then back onto the shore. The locals showed him how to catch it, he did, they cooked it and he said it tasted like 6 month old sh@t. Hilarious!