I may be misunderstanding sjbe (his first post seemed trollish) but I think his point was that people choose to hunt for food and that hunting is not the sole source of food for anyone within the US. He is correct that there is a huge market in recreational hunting and fishing. However having an industry made up of almost entirely of recreational hunters and fishermen doesn't mean that there aren't people who chose to subsist solely on meat that they hunted or fished. I also agree that people chose to survive on what they hunt or fish and there isn't any real requirement to do so to survive within the US.
So what?
There isn't anything wrong with choosing to gather, hunt and grow your own food. I think it actually helps the environment. If more people had to get their own food, they would be more vocal about industry dumping waste in their streams or land being overdeveloped and adversely affecting wildlife populations.
Also I do not know a single recreational hunter that do not eat what they kill. Some members of my family hunt every deer season and we all enjoy venison. As members of their hunting club they work hard keeping their hunting grounds maintained and make sure the deer population remains healthy. During the season the club enforces strict hunting limits because the last thing serious recreational hunters want is poor game populations. FYI most recreational hunters in my state use hunting clubs which are self regulated while the game warden concentrate their efforts on the public hunting grounds.
Back on the topic of drone-assisted hunting, my state already bans hunting using planes or even radios. Why when enforcing limits should be enough? Because hunters outnumber the wardens and the hunting grounds are massive. While game wardens do perform checks on hunting clubs and been known to walk up to you at the entrance of public hunting grounds and inspect your kill, there are still a huge potential for abuse. Everyone I know that hunt support the restrictions on plain/radio coordinated hunts because often they are used in poaching and they don't consider that part of the hunt anyway.
Personally I don't hunt but I do fish and yes I eat what I catch and release what I don't.