Disclaimer: I am not trolling, I am an autistic person who doesn’t understand so many social nuances. Also I am from New Hampshire (97% white), so I just don’t have any close African-American friends that I am willing to risk asking such a loaded question.
Ah, but here’s the real hypocrisy: they absolutely do eat those foods. Southerners of any color love fried chicken and watermelon. That doesn’t stop them from being racist about it. Racism doesn’t have to make sense.