No, 'I Am All Girls' is not based on a true story. It's a made-up narrative designed to engage and captivate the audience through fictional elements and plotlines.
It could be a story of empowerment. Maybe it tells about how girls overcame obstacles in a male - dominated society. For example, in a STEM field where girls are often underrepresented.
It could also suggest that the individual is representing the essence of all the true stories that girls have. It might be used in a context where the person wants to convey that they understand and can speak on behalf of the real - life events, emotions, and challenges that girls encounter in different cultures and societies.