I frequently see vegans believing that humans can go without meat quite easily, even though human diets fundamentally require protein and the most cost-effective way of getting it is by us eating animals
I'm not saying all vegans say or do that, but quite a lot of them do
It's genocidal to assume the human species can make that kind of change almost instantly and not suffer billions of deaths if not more. Vegans either irrationally deny that it will, or insanely claim that somehow, billions of human deaths are worth saving the lives of animals