I’ve read a number of people who claim that your use of the term “euhemerization” is incorrect. These typically give definitions along the lines of the following in Wikipedia: “Euhemerism is an approach to the interpretation of mythology in which mythological accounts are presumed to have originated from real historical events or personages.” This is consistent with what you say about Euhemerus in Element 14 [of On the Historicity of Jesus, pp. 114-24], but in Element 45 [Ibid., p. 222] you use the term in the inverted sense, [whereby] people were invented based on gods, rather than gods being invented based on people.
I do wonder where the confusion arose among people (and I’ve seen a lot of them online) thinking euhemerization means turning a real person into a god. That’s not euhemerization. That’s deification. Julius Caesar was deified. He was not euhemerized. Euhemerized gods are always historically non-existent.
Obviously the word “euhemerize” means doing what Euhemerus did. That’s what the word means. Even just in its grammar (the -ize suffix in Greek and English means “to do like,” hence “to do like Euhemerus did”). But also in how it originated and why. Euhemerus took celestial (ahistorical) gods (Zeus and Uranus) and then turned them into historical men. Not the other way around. Therefore, anyone who does that is doing what Euhemerus did. They are therefore euhemerizing a god. Just as Euhemerus “euhemerized” Zeus and Uranus.
I don’t know why anyone thinks otherwise. Or how it would even make sense to think otherwise. But maybe this is what’s confusing people…