It seems that this theory is based on grossly overpopulated (by deer) areas. Yes, I understand that by providing additional food and cover, we can increase the carrying capacity of any habitat. We've got to acknowledge though that there IS such a thing as too many deer per acre/sq mi/etc. I know that the hunter in us tends to want as many as possible, but if we're honest with ourselves, if we kill 30 does on a 500 acre farm (Sturgis talks about "small" properties), and they are immediately replaced by 30 more - the area has an overpopulation problem. We can attribute the influx to pressure on surrounding properties, but if those does don't return to their original areas shortly after the pressure subsides, it is evident that the habitat they came from wasn't supporting them well. Inadequate habitat for the number of occupants.
What Sturgis advocates is degrading my land's habitat so that the neighbors' habitat takes care of the deer most of the year. Then I attempt to draw 'em back in time to kill them. Seems selfish and irresponsible, as Chainsaw just pointed out.
A "factory" implies that we are producing something. What Sturgis describes is not a factory, it's a sink. Those 30 does are not deer produced in the deer factory; most, if not all of them came from somewhere else.