“Jerry Williams - Choctaw from Oklahoma who tracks them. He believes they are actually demons. “
Not unusual. The Choctaw supposedly fought a war with group of them in 1855.
https://www.youtube.com/watch?v=Rzs0m-Z9xLA
Williams has spent a few decades going around to the pow wows of lots of tribes and hears the same story - big foots and indians were at war all across north america before Europeans showed up. ‘Course its all oral history at this point.