I'm the one person you speak of, by the way. I look at other people's work in generative art and I go, that's cool. Wow. I don't really think about the authorship side of things.
I'm more curious about what tools the person used to create that. Was it AI? Was it pure computer code? Was it a mix? Again, I see it as the tools that the person used, and I get curious.
The fine line between authorship and creating is a natural result of that individual. Every artist seems to have a particular style. They start to create with the tools they get. I like to think they start to get to know their tools. They start to develop their signature style in the tools they use.
If you want to talk about authorship, then perhaps that is one way of looking at it. My pieces are generative, but it's a mix between hand drawn and generative. People see this as an interesting juxtaposition: His work has hand-drawn flower elements but he's using algorithms to change the colours and permutations of the positioning.
It doesn't matter what tool you use. As the artist, you will have your own DNA of your expression. If you want to say, that's mine to own, then all power to you.
That's how I see it. I really see it like that.