This is getting very off topic, but I think that's a terrible basis for disregarding the ethical argument against eating meat. Why is it "species-ist" to think that mammals and other animals with highly developed nervous systems might have a conscious experience similar to our own (and not plants)?
Oh sorry my cat just wanted to comment on this. Hope it doesn't get downvoted for not being relevant, because he has a 'conscious experience similar to our own'...