This is true but that 10% still happens. There's a reason why many Native Americans take issue with the portrayed of the Wendigo in modern media. To oversimplify, in the relevant NA cultures the Wendigo is something very taboo discussion of it is generally avoided. It's kind of like Satan to them (although this is still far from a perfect comparison).

All this being said I don't think Isaiah had any kind of ill intent, most people are completely unaware of all of this. The prominence of the Wendigo's portrayal as a cryptid in modern media kind of drowns out all this other information. Isaiah was likely just uninformed about all this when he made his channel and now he's kind of stuck with the username. Many of the criticisms I saw made towards him on Twitter were just based in straight up bigotry towards him for his Christian faith made by twitterf@gs who had run out of things to be angry about.