I would assume that whomever prompts the AI is the author of the work. Adobe or Dell doesn't get to claim ownership to your work just because they made the tool or computer.
That makes sense to me, and good point about Adobe/Dell.
So then any AI would not create art spontaneously right? It would always require a user to prompt it in some way. So wouldn't it be correct to say that all AI art is actually be authored by a human and as such copyrighted to that human?
You might find that strange and disagree with it with a flawed analogy but I've merely reported the official stance of the US Copyright Office and legal precedents. See, for instance, this overview with further references:
"Prompts Are Generally Insufficient to Make AI Output Copyrightable"
If you don't trust this summary, read the US Copyright Office report for yourself. The gist of the position is that prompts are not specific enough and do not lead to deterministic output.
On a side note, I find it weird that even on HN people automatically assume you're only expressing a personal opinion, yet in all fairness I should have included some references from the start.