The thing about modules is that it can still be learned and repetitive. Deep Rock Galactic is a prime example of that. That is the beauty of AI generated over procedural generation. It allows far more freedom in the generation of a level. The real end goal would be to merge AI and procedural, in that you can still use the props you menetioned to fill a level, but leave the larger scale design to a NN that then fills the level with appropriate pre downloaded props.