> Why is that ridiculous? If you set up a farm that releases GHG surely you are the producer of it.

Are you saying this is actually how GHG calculations are done with respect to rural/urban, or that's how it should be counted?

>consumer can aknowledge that what ever they do makes no difference in the big picture.

a single consumer can't make a difference because they're one person out of 7 billion. consumers in aggregate can make a difference.