All AI including ANN are just search methods of hyper/parameters to satisfy an objective function
It is no different from using any tools that can be used to create other artifacts, like glass, ceramics, etc.
The natural person executing the AI already has specified the objective function, specified the range parameters and hyper-parameters, and decided the process of searching for optimal hyper/parameters and possibly adjust them based on feedback/intermediate results. Just because furnace can form a glass doesn't make the furnace an inventor, nor a potter's wheel can be an inventor.
It is the executor who started the whole process, the fact that the executor didn't get involved during the process makes no difference. He/she already specified the process and initial parameters beforehand, and let the process run its course as specified, reacting to external environment as specified.
This is the reason why software (AI) or harware (robots or autonomous systems) can never be inventors. The product (software or hardware) and the process (execution with initial conditions and reaction from feedback) themselves cannot describe an act of invention. Someone external to the process and product intentionally designed the product and set the critieria, then let the process run based on those criteria, and selectively choose to use the artifact generated.