The thing that gets me about this is the pejorative language: "They are deer, elk, and livestock killing machines."
Well, such a discovery! Millions of years of evolution might just have something to do with our "savant's" big find. Evidently, he has never watched a common house cat or a corn snake stalk and kill a mouse. They, too, qualify for honed and perfected "killing machines," just like lions, tigers, great white sharks, and all the rest of the predators. Those that cannot compete have died off long ago.
The fact is, as wolves have been reintroduced to the USA in both Glacier and Yellowstone National Parks, they have served to make the ecosystems of these areas work again. For instance, in Yellowstone, when the elk and buffalo populations grow beyond the capacity of the Park to sustain them, the herds are driven out of the Park and special hunting tags are drawn to thin down the populations to a healthy, sustainable level. So, rather than the wolves, this system does what? It simply substitutes one "killing machine" for another.
By the way, there are also grizzly bears on the loose in the Western USA. They are also fearsome killers -- are they to be eradicated for being guilty of being "killing machines" as well, or because they might make a trail hike a less pleasant experience than a walk in the park? (Of course, a walk in the park might expose one to the all time greatest "killing machine!)
Another fascinating balance that occurs in the USA is the balance between wolves and moose in Isle Royale National Park, which is a large island in Lake Superior. Again, rather than the moose growing to the point where starvation controls the population and the environment suffers from their over-grazing, wolves keep the moose at a sustainable level and cull the unfit and unhealthy from the herds.
Whether or not wolves grow this big, the pictures appear to me to be fake. These grinning guys do not look like people holding 200+ lbs wolves to me at all.
As far as "you will have to carry a gun on the trail!", big deal. I carry on the trail myself, except in Yellowstone, and I have yet to hear of a wolf pack killing a human in Yellowstone in modern history. Sounds like a lot of scare tactics, rubbish, and bunkum to me.
I have long had a fantasy, one I've had since we lived for 2 1/2 years in New Jersey. New Jersey is a very anti-gun and anti-hunting state. Once, in the newspaper, a women being interviewed while a local trap club was shooting referred to "the criminals practicing next door." New Jersey has a TERRIBLE problem with deer and also with deer ticks, which carries Lyme's Disease. This is a very nasty disease that costs a tremendous amount for drugs to remain alive in great pain, if not caught early. But, of course, hunting to New Jerseyans is unthinkable as a means of population control.
When we lived there, there were a great many road kills of deer -- usually one or more per mile of highway -- and the deer would come right up in the yards of houses and gobble up small trees, flower beds, or anything they could eat. They were simply starving to death.
Some bright bulb proposed giving them birth control. This immediately suggested a program where these fruit cakes would go out in the woods and try to fit condoms on the bucks -- I wouldn't put it past those kooks to try it, either, such is their rabid anti-hunting stance.
But, I have another solution. Out in the Great Plains of the USA on the highways, it is common to see huge double decker semi trucks hauling cattle to market. One doesn't want to follow these trucks too closely or drive beside them for long, or one's car will surely be splattered with a large, fresh cow pie.
I would like to get a couple of these trucks and fill them to capacity with coyotes, drive the trucks to New Jersey, and turn them loose. I'll bet that within a year or two, the deer population would be on the road to recovery. There also wouldn't be a poodle in the state, and even feral house cats would be rare. It wouldn't matter whether one was talking country or city, since coyotes are quite capable of thriving in the city as well as the wilds.
I would like to see how long those kooks would hold out against doing something about the population of coyotes! That picture is highly amusing to me.