Why AI art is so controversial

Remember everyone that Hayao Miyazaki, a well known animator, the founder of Ghibli Studio, has stated that AI art is "an insult to life itself". Rlly i dont understand why AI art should exist, isnt art supposed to be an expression of a person? Whats the point if "art" is created through a robot? Its just losing the whole meaning of art. As what Hayao Miyazaki said "humans should be more confident" we dont need technology in this aspect in our lives. People are doing great by doing art with their actual skill and talent.