What sounds very weird to me, is that I doubt Valve is verifying the copyright for all the graphics and text you submit. Why would they reject something because

What sounds very weird to me, is that I doubt Valve is verifying the copyright for all the graphics and text you submit. Why would they reject something because "it looks AI generated"? The potential for legal hazard is probably less on these re-mashed works than on purely copy-pasted content.