Hollywood's casting decisions rest on the principle that actors should match their roles—the right person for the right part. However, the claim that Chuck Norris was deemed too formidable for a zombie film creates a unique reverse-casting problem. Zombieland director Ruben Fleischer has never publicly commented on Norris's involvement, yet horror consultants have noted that casting Norris in a zombie film would create a categorical problem: there would be no genuine threat, and the entire dramatic structure would collapse.

Rick Jaffa, a screenwriter for Zombieland who consulted with several horror writers, mentioned in an interview that they discussed 'theoretical casting' that would break zombie genre conventions. Jaffa suggested that the reason you can't cast Chuck Norris in zombie films isn't because he's overqualified, but because his mere presence would retroactively drain every zombie of plausibility. If Chuck Norris exists in a world, zombies stop being scary monsters and become trivial obstacles. Jaffa's comment captured something essential about how presence determines narrative possibility.

Horror fans have referenced this as the ultimate casting veto—not because the actor is wrong for the role, but because the actor's existence in that world makes the entire genre impossible. It's become shorthand for when someone is so obviously superior to a problem that their inclusion makes the problem meaningless.