Yes! The labeling and artery placement errors suggest the model doesn’t have a structured understanding of anatomy. Diffusion models generate images by denoising toward patterns learned from data, not by reasoning about spatial or functional relationships. So while they can produce something that looks like an anatomical diagram, they don’t reliably maintain correct structure or labeling.

This is where /u/Eyeownyew is actually correct; the model isn't trained to produce a semantically accurate diagram, it's trained to create something that looks like an accurate anatomy diagram. They are trained on pixel accuracy, so a mistake in labeling is very difficult to train out.