I will go back to each their own. I have no problem hunting white-tail over bait, or shooting from a blind or the back of a truck, it's just how its done in my home state. I understand some folks find that shooting and not hunting, or even "unethical" to them, I don't. While I personally, don't high fence hunt white-tail, they have a natural range of 640 acres according to TPWD. You would be hard pressed to tell me that its not fair chase when some ranches are several thousand acres, those deer will never know the difference between a high and low fence and its certainly not a "canned" hunt. I would challenge anyone to spot, stalk and walk South Texas, where the brush has not been cleared, its just not possible.
I have high fenced hunted in RSA, 25K acres continuous, to me that's not a "canned" hunt either, that's more then enough range for Plains game. I understand that may not be hunting to some folks, but for me its was fine. 25k acres would be on the low end of the natural range of a lion. The more food the smaller the range, the more scarce the food the larger the range up to 200k acres. If I was interested in hunting lions (I'm not) on a ranch, I would have to know a lot more about the ranges of those cats. To me, no difference between PH knowing where the game hangs out at in a high fenced operation, versus a "no fence" operation where the tracker spots some fresh poop driving, he tracks the animal, sets up your sticks and the PH tell you to shoot it X spot.
The real problem is we are doing ourselves in wanting to tell each other "how to" hunt based on our own ethics, thinking that will appease the anti's and influence the masses - It will not. Hunters are not out to force to make everyone a hunter, whereas the anti want to force everyone to be a non-hunter.