He can't seem to help it, even where his background knowledge is weak. In this one, he contrasts Huitzilopochtli with pagan sun gods, not realizing that that's exactly what Huitzilopochtli is.
Section 44 is ready for PL.
Edit: It occurs to me that there might not have even been sources of accurate information about Aztec gods at the time in England (but I'm too lazy to find out).