I don't necessarily disagree.
The style of a director is the common set of guidance that they provide to the artists who do the work of making the film (eg the actors, the grips, the editors, the lighting, the markup, etc).
Likewise someone who uses AI to make art can have common things they seek in all the AI images they generate. Common things they include in their prompts to push the images to appear in a particular way.

They're not the same but there is enough commonality that criticism of one mostly applies to the other.