There’s no such thing as “going against evolution.” Vegetarianism is as much a valid part of evolution as any other behavior any animal exhibits.
I think if lions regularly bred into existence billions of antelope, confined and tortured them for the entirety of their existence, and then ate them, yes, a lot of people would view that as pretty evil, even while acknowledging such a creature is probably incapable of the moral calculus that (some) humans are.
I think if lions regularly bred into existence billions of antelope, confined and tortured them for the entirety of their existence, and then ate them, yes, a lot of people would view that as pretty evil, even while acknowledging such a creature is probably incapable of the moral calculus that (some) humans are.