I find that hard to believe tbh. Maybe if someone doesn't think about it at all. But the second you do it should be pretty obvious that killing an animal and not killing an animal are different scenarios, and very generally speaking one of those is better than the other.
The only alternative I could think of would have to be based on the assumption that an animal's life absolutely doesn't matter at all, and I never did (nor would want to) meet anyone who honestly believed that.