I'm not a vegetarian, but to be honest that article isn't that great :/
Unless you're a pure meat-eater, you will still be eating the wheat and other products that use combine harvesters, yet i don't see meat-eaters bounding after a rabbit run over by a harvester :/
With regards to vegetarianism in general, if that's the way they choose to live then that's fine :3 i am an animal lover, but i believe it's part of the natural circle of life to be able to eat what we were meant to -we have the teeth of omnivores, not herbivores so i don't see much harm in it, although i do refuse to eat game as i believe that we have all the animals we need in captivity for food already so there's no need to start killing wild animals that are part of herds and families as well.
The way that the article suggests not eating the animals that you kill is precisely the reason i'm so against people wearing fur, though >.>