This is where it gets very tricky. You could argue that giving a computer input in the form of a 'rough' description is your input and the computer is filling in the blanks (albeit very large) using information it has to hand that matches your description. Where this goes from art you visualized or wanted to hear to computer originated art becomes a matter for interpretation as there are all shades of grade from " Draw me a picture of a steam engine" to "Draw me a picture of a steam engine from the UK with green livery, 4-6-2 configuration, with 6 full passenger carriages, running at full steam in a valley in Yorkshire" etc. However if you said to a computer "produce me a picture" (in this case we are using art to mean a 2 D representation of something that could be printed on paper or displayed on a computer screen), what it comes up with would be random and will be based on all the pictures it has scanned in its training phase. But is this art or simply a random aggregation of data it knows of as art. Since computers do not have (as far we know) feelings, I doubt it would be based on its current state etc.
What difference would it make?
One argument is that for humans when we create art we are drawing on an aggregation of our data in our brain known as art. We have lots of rules to follow like ai does, we follow the rules of 3rds, composition, leading lines, color theory etc... ai is doing the same thing.
The second argument I would make is that art is in the eye of the beholder. The less educated you are on art the less you can describe why something looks good to you, the laymen looks at something in a gallery and says my kid could do that, the educated can draw from their knowledge of the history of art and artists and link many connections to justify why something is worthy of being in the gallery or not. Ai is doing the same thing.
Who is to say if someone no matter their education level or sophistication level in art, looks at something and enjoys it that it is or isn't art? If this is true than what could it matter if it was created by Monet, a child or ai? Art is art to the viewer. Like someone said about a different subject, how do you know it's art? I know it when I see it.