Agree. If it works with picture than it's ok. But sometimes super recorded sound does not fit in this "cartoonish" picture ( btw, I like CM graphics)... Picture and sound must work together, must have that "mojo". (I worked on sound for movie maybe ten years; recording, mixing, editing...and you won't believe how drastically you can change picture - your perception with sound and it's timing)
But there is no hard and fast rule. People use what people like....
Just my 2c....