According to the Wikipedia definition, although there is no generally accepted definition, "Art is a diverse range of HUMAN activity, and resulting product, that involves creative or imaginative talent expressive of technical proficiency, beauty, emotional power, or conceptual ideas."
HUMAN activity. Not AI production. An AI has no "creative or imaginative talent expressive of technical proficiency, beauty, emotional power, or conceptual ideas".
In the act of artistic creation, whether or not it involves greater creativity, skill, expression or innovation, even if it is nothing more than a mere illustration or a product for the entertainment, graphic, or whatever industry, the artist CREATES artwork, captures in whatever format something that is part of himself, originates something within himself and turns it into a creation. Artist gets involved in the creative process form the beginning to the end.
By using Artificial Intelligence for the creative process, the "artist" (to call it something in this case) comes to fulfill the same role as the client who commissions a piece: he proposes the idea, gives a series of guidelines on how he wants to or need it to be the artwork, and then waits for the artist (or the AI in this case) to do it and if necessary, makes corrections. BUT HE DOES NOT PRODUCE THE WORK HIMSELF, he does not create anything, just simply modifies what is created by an AI.
Art is something human, part of HUMAN culture. Perhaps the day will come when AIs will produce their own art, by themselves, expressing their creative needs, and at that time there will be a new type of Art, artificial, robotic Art or whatever you want to call it, but definitely, IT WILL NOT BE HUMAN ART. Until then, this is not Art, just an artificial product pretending to replicate human creation.