I don't have a great answer to this other than "language evolves". Your comment could also be extended to other terms that have gone out of favor, such as "Negr

I don't have a great answer to this other than "language evolves". Your comment could also be extended to other terms that have gone out of favor, such as "Negro" being replaced by "African American" and more recently "Black". I'm not a linguist nor a historian so I can't comment extensively on the "why" of this evolution.