I've seen many white people put ketchup on their fried chicken. I don't think it is an Asian thing, I just think people really like ketchup.
Me I could live without ketchup very easily I don't even put it on my french fries.
but give me some of that sriracha any time.
this has just made me realise were like commenting about how people eat chicken with ketchup, So were effectivly talking about people how put ketchup on food, Which is what its made for !xD