It takes about 2-6 deer to provide meat for a family of four for a year. So, a single deer is about two months of meat. (a deer is 50-125lbs of meat... depending on species and size)
My state of 3M had 100,000 deer harvested last year. That's deer for 3% of the population. One deer each. Not gonna put a dent in our food supply. That was my only point.
And what about rabbits, squirrels, turkeys, ducks, quail, bison, elk, feral hogs, etc., etc? There's more game out there than just deer.
I don't mean to be a scrooge - go hunting if it pleases you! But its not gonna feed America, not even a percent or two of us. The numbers don't support it.
Nobody is claiming that it will.
The bigger issue is getting one's family on board. A spouse or kids who have grown accustomed to CAFO beef and chicken and not much else will be difficult to transition to gamier meats, to say nothing of offal.
To this day my boys rave about the pepper deer tenderloin, roasted and sliced thin. Best meal of their lives. And they're all about 30 now.