These people would probably be the first to die out in the event of civilization collapsing. Besides, if we're not supposed to eat meat, what are all those nice pointy teeth we have for?
The problem here is that these people see animals as people, which by name and definition, they are not. Throughout history, it has always been the victorious armies that write history, and the dominate species that decides what gets eaten. It always has been and always will be. Any attempt to mess with that will only result in an early grave for a people or species.
I don't think tigers or wolves or lions think much about eating people.
I also find it funny how some people have something against hunting but say it's OK to eat meat that grew up in a cage and got whacked on the head with a hammer and served with a side of fries.