Earlier quoted context omitted.
Our species manage to get away from running after food. Animals do, every life form takes from the environment. The issue is how easy it is to us to breed, slaughter, bag and cook living forms nowaday. But if you were 100000 years ago, you'd have no second thoughts about eating animals.
100000 years ago humans had significantly less empathy than we do now. And they didn't have a grocery store with more varieties of vegetables, whole grains, beans, lentils, fruits, seeds, nuts, tofu, tempeh, seitan, cashew cheese, veggie burgers, vegan sausages, vegan pizza, vegan chikn, plant based milks... than one could possibly imagine, a short drive or walk from their home.
Are you sure it's empathy ? 10000 years ago someone killing an animal knew it was taking a life. I've read once that jewish religion did create kosher rituals because of that (maybe other religions too I didn't dig further).
Today it feels more like depression based morality caused by the chaos of the last decades and the glooming collapse than empathy. At least that's how I feel when I see people talking about the subject (but tbh I don't see a lot of that group, mostly some known figure in mainstream medias.. probably not the best speakers).
Again, long ago, you had to survive, it was fair game. My cat doesn't refrain from stabbing a mice at night, a cat is highly skilled and potent compared to a mouse.. yet nature balances things out, mice hide, they live their existence. You know if you make it too comfy, a species will diverge and probably harm itself. Stress is part of life. And as humans, even when violently hunting.. I think we knew (pulling that out of my own theorizing arse) that it was a sad but needed act.
Now we're in an era where technology, knowledge will remove all these requirements from our lives (say we get synthetic food, etc etc) so we're shifting toward a purer existence. Something where you don't impact nature as much. But it's still early days in a way.