Welp, if that's true, she look even dumber for signing over her publishing for something he ain't write
He wrote and produced it with Chad. He later said (after things fell apart with Kelis) that he wished he gave the song to Britney because it would’ve been an absolute smash.
By the time that album that milkshake was on came out, things were strained with her and the Neptunes and she said she wanted to work with other producers — and they let her rock. Milkshake was the biggest song on it and the biggest song of her career