Did Charlie have brain damage?

Charlie and his whole family been eating nothing but shitty underwear soup for his whole life. Then he examines Grandpa Joes soup… clearly just water that soiled underwear had been soaking in….and asks if it’s his supper? Well no SHIT Charlie have you forgotten that shitty underwear soup is all you’ve had to eat for YEARS which accounts for your stunted estrogen filled little girl body but also apparent brain damage? Charlie should have known full well that shitty underwear soup was ALL that family was gonna eat and it was unfair and uncouth of him to draw such attention to it. Charlie should have sucked it up and sucked down that underwear soup like everyone else. He could have used his birthday Wonka bar as a chaser.