I estimates a well developed tulpas moral status to be similar to that of a newborn infant, late-stage alzheimer's victim, dolphin, or beloved family pet dog.
Would you classify a novel in the same "moral-status" tier as these four examples?
No, thats much much lower. As in torture a novel for decades in order to give a tulpa a quick amusement being a moral thing to do lower.
Assuming you mean either a physical book, or the simulation of the average minor character in the author's mind, here. Main characters or RPing PCs can vary in complexity of simulation from author to author a lot and it's a theory that some become effectively tulpas.
If it's worth saying, but not worth its own post (even in Discussion), then it goes here.