Blame Harlan Ellison for everything that's gone wrong with Star Wars?

When Emma and I lived in Los Angeles, a friend told us Harlan Ellison was the person who told George Lucas that "Darth Vader" sounded like "dark father". I don't know if that's true—Hollywood gossip is no more reliable than any other gossip. But sometime after the first Star Wars movie was finished, and most likely after Leigh Brackett finished the first draft of the second movie, Lucas decided