Many forms of creative endeavour, from landscape gardening to Jackson Pollock drip paintings, have allowed for a large amount of the gap between the creator's broad intent and the final appearance to be filled by processes that aren't 100% predictable. There's also a lot of intent going on in which works to display and which to discard

Whether largely unintended consequences or not, the abstract forms of the man in the tie are interesting enough to not look out of place in a gallery, and the renderings of sheep and clocks are clearly the products of a mind (even though it's a human one)trying to get a response from the viewer attuned to the idea of androids dreaming of electric sheep, melting clocks being an iconic surrealist thing and failure to interpret "one (1) single clock" being funny. The grassy hillside, sans sheep, not so much. A quick play with the algorithm suggests a lot of its outputs are unrecognisable forms with no correspondence to anything, so he'd already thrown away a lot of uninteresting results to get to that point.

Let an artist draw the same picture a second time without seeing the first one.