Copyright is a special protection under law to incentivize people to produce creative works. Machines don’t need this incentive and thus don’t need the protection. It’s fairly straightforward.
Couldnt you say the same about pen and pencil? Or any other medium? Turning imagination into something physical/digital/real always entails loss. This might be a matter of a few more iterations of better usability. If you are able to put the the limits of the machine representation of your imagination into words they might iteratively vanish. You wont connect your imagination to a machine but to words.
Posts were also about creativity and design in the context of copyright thus the focus on economics. Art for its own sake as a personal pursuit doesnt really relate to that perspective. Unless you want to trade in other currencies (fame and number of impressions) in which case its the age old competition of what is able to speak to people on a deeper level. For which the representation is often less important then the idea / perspective and how that is able to resonate with people. For that the medium is just that, a medium.
Most takeout today is also warmed up according to strict recipe. "Sandwich artists" arent chefs either. And even the initial recipe is designed for mass reproducibility and supply chain feasibility over taste. You still get food but a lot fewer people employed as actual chefs doing chef stuff.
edit: Removed unsensible comparison