Hera abandoning the Trojans 

The section in the text about Hera's hate for Ganymede seems to be incorrect.

[Her hate of him was applied by mythographers to account for her abandoning the Trojans, an otherwise inaccountable shift in the alliances of the Trojan War, for the Troad was part of the homeland of the Great Goddess, of whom Hera was the main Olympian representative.]

The reason for the war was the decision of Paris in the famous contest between goddesses Hera, Athene and Aphrodite. Hera was sure to take the other side in the war, as she wasn't the choice of Paris.