There is a political component to vegetarianism, a "you shouldn't eat more than your share" that is socialistic in outlook. Those who eat a lot of expensive protein consume more, in their thinking, than someone who eats soybeans. Takes more land to support a cow, yadayada. Resentments of this sort are leftish more than sympathetic to animals.
For some reason, your reply has reminded me of many different Freepers. Authoritarians are authoritarians are authoritarians. ;-)
This guy doesn't seem to have been that kind of vegetarian.. so I can't really see this as some sort of ideological victory... and it's a pretty pointless article to boot. Vegetarianism never required an "excuse". Don't they have editors in Ireland?