That is not true. Manga, anima, chibis, they're all reproductions of the same tired style. One can hardly ever get to visualize the style of the artist because the artist is just reproducing the same style that everybody else is.
hmm, well not to sure bout that,i can see the individualty within most peoples manga art, and i see it as a beautiful and elegant artstyle. mabey im right mabey im wrong, i dont really think there is such a thing as a bad drawing/cartoon style.
but i do agree that people should not limit themselves to just making manga. Other styles like realism, abstract, and other artforms are all key to making a good varied artist.