If he just said "bottom of the barrel developers" people would have assumed he meant "bottom of the barrel developers in USA" and not "bottom of the barrel developers in the World". You can get developers much cheaper in India, which is why you have to add that part as otherwise people would protest the number as unrealistic because not even bottom of the barrel developers are paid that low in the area they were thinking of.
The more accurate description would be "bottom of the barrel developers in India", but people would complain about that as well, but maybe not as much.