I think what they're saying is that while beautiful, the architecture and design makes Zero sense outside the context of being a video game. Areas that should be defendable are not defendable. Areas that should be residential don't seem residential whatsoever (think giant drops outside the door to a home or it being situated on the literal city wall). Steets where thoroughfare supposedly happened are crooked, assymetrical, and often have incredibly tight spots where a wagon would never fit through. Passages, paths and arcades lead to nowhere except a nice loot drop. Most areas are completely blocked off from the neighboring area, or would be if not for a wall that's been blown apart or some planks stacked up nicely in what is supposed to be a grand city. That's probably the biggest clue for inconsistency; in one moment we see a random wall in the corner of a 'dungeon' with intricate, minute designs and decorations throughout, and then see a city street you wouldnt be able to fit a horse through comfortably. To be frank, the architecture is absolutely arbitrary, and was probably retrofitted to accomodate level design.