I would have no problem buying and using various props whose base was created with AI. Of course, only if it is labeled. But promotional images with AI are out of the question. I am a seller of the "old school" and once learned that these renders are untouchable. I do not edit a finished image of my dress (for example) with Photoshop, and certainly not with AI. All I can say is, show the reality, in this case the render. A background should not be a problem, but what is being sold should be disclosed.