Actually, it's one of the food she hates according to Ataraxia. Alter's the one who likes burgers.
(Another food she hates is octopus due to some trauma from Zero).
Reminds me of Deadpool. He hates chimichangas iirc, but the fandom likes to shoehorn it as a Trademark Favorite Food of his. He just happens to shitpost about them in-universe.