Its only evil because man has free will/sentience and thereby can commit "sin" instead of just being an animal.

Of course this ignores things like invasive species

A lot of these idiots will have cats which are a very good example of destructive, invasive species that cause localized extinction of small birds, mammals, reptiles, and amphibs. They don't even bother to eat most of what they kill and won't even kill most of what they attack.

Then there's the whole toxo issue which is another literal crazy bag of cats.