I'm largely in the not fond of AI artwork camp and the weird rigging on the chair lifts in the winning entry bug me no end (first thing that caught my eye), however ...

Is Jeff Koons (and others in the "massive installation" artwork game) the creator of his works or does that honour go to the minions that instantiate his wishes?

We're talking "grand vision" description here .. now you 30 people go and flesh out the details.