Exactly. Locally grown veg are better than imported veg as well. Go for that whenever possible.

But using this to present some false dilemma between a chicken raised on your own land and imported vegetables is just nonsense.

Obviously it was a cherry picked example, but to me the falsity is in the claim that “if you are eating vegetables you are necessarily more environmentally conscious than those who eat meat”. There are degrees of environmental friendliness on both sides and, certainly, I think most people would agree that most meat-eaters do not appropriately weigh the effects of their consumption. But I think the same is true of many vegetarians who just assume because they are eating vegetables they are definitely making more environmentally aware choices than all omnivores.

That was my only attempted point.

Yes to this as well. They found a variation of +/- 50% of gasses produced based on the individual practices.