What is the meaning of the name Thunder?

Mark 3:17: "And James the son of Zebedee, and John the brother of James; and he surnamed them Boanerges, which is, The sons of thunder"

Dennis R MacDonald (The Homeric Epics and the Gospel of Mark) has researched Homeric parallels in Mark's Gospel. He says the two disciples, James and John, the sons of Zebedee, who are nicknamed "Boanerges," or "sons of thunder" are comparable to another pair of brothers, the Dioscuri, sons of Zeus.

Zeus is often associated with thunder, and his sons are depicted iconographically as on the right and left of an enthroned deity, similarly to James' and John's request to sit at the right and left of Jesus in the kingdom (Mark 10:37). So, based on MacDonald's research, the reference to "thunder" has the hidden meaning of Zeus, according to the rules of mimesis applied in Greek literature of the first century.