The 1991 name change from Kentucky Fried Chicken to KFC sparked wild myths, but the real reason involved declining earnings and the word "fried."
https://www.foxnews.com/food-drink/why-kfc-stopped-calling-itself-kentucky-fried-chicken-myths-still-wont-die
https://www.foxnews.com/food-drink/why-kfc-stopped-calling-itself-kentucky-fried-chicken-myths-still-wont-die