I don't see how this should be specific to computer-generated art. You can make drawings by hand that have no point. In my opinion computers are just another tool for artists.
My novice AI-art workflow involved a similar pattern. I come up with some topic or thing I want to see, then I iterate on the wording of the prompt and all the little variables the tool takes. I end up with dozens of crap pictures, but sometimes cool stuff comes out. If I keep working on this, alongside increased generation speed, I could see myself "creating" really good art.
To me it is about the process. It's the human input that makes art valuable. I mean, if AI becomes sentient then those judgements would be a valuable input in themselves too.
The trick isn't to be brilliant and pop out a masterpiece. The actual trick is to be able to generate enough variations that you can sort through them, cull the promising from the unpromising, rearrange them in various ways, stitch together the seams, and then sit back and lean on your personal aesthetic to decide whether what you've cobbled together makes you want to share it with others, keep chipping away at it, or abandon it altogether and start over (or not).