I've also tried to stay out of this, but just to provide my limited experience:
I have property in Ontario & spend 5-6 weeks/year up there, most of the time in the bush. There is a healthy wolf population. I see them, hear them, and find their kills. They do kill deer, including mature (I mean big) bucks. They also can have a temporary negative impact on your hunt if they are running around your immedate locale. The deer become quite "scarce" for three or four days thereafter. They will also kill a dog; I try to keep mine in sight at all times, not an easy task.
I'll admit that a wolf pack in full howl as you walk to or from your stand is kinda chilling, but IMO we should fear things with more prospects of, well, leveling us, such as cancer, heart attacks, the stuff that's gonna get most of us.
So the wolfs are there, but the whitetails are too, are abundant enough, and get big. I live in MI and have heard many tales of the complete decimation of the UP herd due to wolves. I won't get into that, but will state what I know about my region in ONT: 1) there is an open season on wolves, two allowed per hunter 2) they will venture further north for moose when available 3) the provincial government has (I've been told) trapped or killed problem wolfs and 4) many hunters probably shoot them on sight, tag or no tag. I am not for (4) at all, anywhere or anyplace, and I also know loggers and others who have no interest in shooting 'em, including one whose dog was torn up pretty good by one. Some consider them part of the scene up there. Agrees with me.
According to locals ranging in age from 30's to 80's, the wolves have been there "forever", but coexist with the deer. The deer have actually become more numerous (and moose, less so) as the landscape has changed with massive poplar and bam cuts. In my humble opinion, they coexist because they look at 'em not as vermin nor as magical creatures, but as part of the wild that can occasionally require a bit of tempering. I hope the government there continues to allow that framework.
I will not pretend to judge their impact anywhere else in the world, the above is just my experience, FYI.