Jean has been denied the Phoenix simply bc Aaron had a lock on it over in the Avengers office. Now that he's gone, its up in the air and we can only wait and see what is done with it in the next year. With that said, Jean very much is portrayed as a strong Marvel women alongside the likes of Captain Marvel and Jane Thor and this is without the PF. She has proven that she really doesnt need it. She can go toe to toe with Marvel's big guns