Existence and prevalence are not the same thing. Perhaps the title should replace “not eaten” with “not commonly eaten” for maximum accuracy but that doesn’t make it a myth. I’m sure I could find an American restaurant serving squirrel, but I’d still say squirrel is not normally eaten in America.
Watch here: https://youtu.be/1k4x9FrD5k4?t=668
Edit: Andong also specifically talks about the Nichirei deal.