User blog comment:Drakan95/Steve Jobs vs Seto Kaiba. Epic Rap Battles: Cartoons vs History. Season 2/@comment-6533831-20151128172842/@comment-4920659-20151130145031

BTTF only said that adaptations of characters in film can be as popular as their novels, and using either one depending on the series theme doesn't matter. When people think of Harry Potter as a character, the Daniel Radcliffe portrayal is the one majority of people think of, not the illustrations of him. Likewise, the most common depiction of the Grinch is often the cartoon character, if not the Jim Carrey live-action version, rather than the book illustration. As Flats said, he's listed fifth on a list of "50 Greatest Cartoon Characters of All Time", and even his cartoon has a 100% approval rating on Rotten Tomatoes.

Drak has already stated he's using the Grinch as a cartoon character regardless, so there's no point in having to argue about it more. The creator of the series has the final decision if he already has his mind set.