Hi Ossobuco-
I've raised my own ducks and geese, as ethically as possible, and haven't had any qualms about gracing my table with them when their time came. I've eaten many livers, and have also worked with foie gras in culinary school workshops. Personally I am not very fond of foie gras and don't consider it a healthy food because it is so high in fat and I prefer the taste of normal duck and goose liver. But I believe it should be among the options available to people who enjoy it more than I do.
The primary concern for many people is the issue of force feeding. Of all the things done to animals, force feeding is an odd one to pick on. The procedure can certainly vary depending on the care one takes while doing it, and anyone who injures a bird in the process is a callous oaf, but that is the problem, more so than the forced feeding. (Yes, by the way, I did follow your link, and have personally seen many responsibly-run farms).
The US government has force fed prisoners at Guantanamo. I have heard very few complaints about the force feeding, and indeed it was intended to save their lives against their wills when they went on hunger strikes, but who in their right minds would focus on the force feeding when there are so many bigger issues such as being held for years without formal charges, or suggest it's more humane to simply let them starve themselves to death?
There are different ways to get "too much" food into an organism. I'm a sucker for cats, and I've been buying my cat the food he prefers. Yes, companies have been savvy enough to pump them full of flavors, scents and textures that make them irresistible to a cat. Now comes a quandry. Left with a big bowl of food, my cat will eat too much of this food, he will get fatter and fatter until his belly drags on the floor, and his liver probably gets enlarged as well. So it's time to choose: 1) Should I buy a less tasty food that he refuses to eat unless he is literally starving? 2) should I give him less food than he wants so he's perpetually begging for more? 3) should I just give him what he wants and let his belly drag?
I've chosen (2) though he routinely jumped on me as I slept to show his displeasure. But really all three options could in some way be considered cruel by those who are really into hand wringing. We're clearly facing this quandry with humans and junk food as well. Nobody had to force a tube down this kid's throat to get four times the needed calories into him.
not my cat but this is probably how he'd look if he were in charge of feeding.
And this is how many kids DO look when their parents imagine that giving the kids what they want is "humane"