I'm saying BS too! While our wildlife agencies are good, they are known to mask truth in various ways that fit their political needs, or longterm goals. Montana as well.
For years here officials denied wolves were living in Yellowstone (before the reintroduction and long after they were trapped and killed out earlier in the 1900's) and yet several sightings routinely occured every year. As a local and young zoology major, I saw a wolf in Yellowstone in the 70's. There is no mistaking wolves from coyotes here....but the agenda was to get wolves reintroduced. Of course that injected a lot of $$$$ into their USFWS coffers and gave several folks lifetime careers here did'nt it? The truth is they could'nt reintroduce this species if they acknowledged the return of wolves "naturally" to the ecosystem. It's all about agendas and money, or at least a lot of it is.
Like a lot of you, I've killed quite a few coyotes, and never seen one ever approach 100lbs....even the biggest ones killed by me or by my friends. And last I checked, MT is about as far north as you can get in the lower 48.
100 pounds...truth be told...is actually about as big as most wolves will get. Some get bigger, but that is a big dog.