The more I think about it, the more I feel AI is just a tool used to make art. Like a synth. 

For example an artist could decide to make a piece of art with whatever they found in their trash and randomly place it in a collage. But the art is initiated by the idea to create the art which comes from the brain of the artist. 

The same with AI. It creates art but it is based on an initiating act from the user / artist. At some point AI could be capable of creating its own art using its own ideas. 

So, yes AI art is art as valid as any other form. But it has not made the leap to actually becoming an artist like a human… yet.