so much anger!
I think it's more plausible for a creature of this nature to be in Siberia or somewhere equally as remote as that. I try to stay open minded but skeptical with all these cryptid type creatures for the mere fact that the existence of rare species is not impossbile. Improbable, yes, but who's to say that bigfoots aren't intelligent enough to stay under the radar? For those of you that believe in evolution, intelligent humans evolved from unintelligent animals. We bury our dead in graveyards, what's to say they don't do the same? Maybe that's why they're so few and far between in the fossil record. Gigantopithecus have been mostly found in caves and there are so very few examples of those, but there isn't much backlash as to whether or not they existed. But this is all mainly devil's advocate. I'm open minded to the idea that animals exist that we have not discovered yet and that one of them could be a giant North American ape.
I, personally, find it exciting to consider what things we haven't found yet. I consider myself to be somewhat of a scientific thinker and that lends me to never fully rule something out. Only time will tell.
Does the OP have a link or title or citation of this peer-reviewed paper?