I don't think you can call procedural generation "zero marginal content." When dealing with PG, the content is the procedure, not the output, and the procedure

I don't think you can call procedural generation "zero marginal content." When dealing with PG, the content is the procedure, not the output, and the procedure never changes. There is a distinction between PG and a generative model like DALL-E. PG involves procedures that are written and understood by humans. Something like DALL-E, while technically a deterministic procedure taking inputs and producing outputs, operates via a process that is not directly understandable to humans.