The subject says it all. George Lucas has so much to say on the topic of Han shooting Greedo—like the nonsense in this Washington Post article—but doesn’t say squat about Luke kissing his own sister in The Empire Strikes Back?
I have seen the discussion in this thread as well as this thread. And while I acknowledge the in-universe ideas such as the Westermarck effect—as pointed out in Jeff’s answer—I still have a hard time swallowing how quickly dismissed that kiss between Luke and Leia was/is.
Outside of casual in-universe speculation and fan fiction, is there any evidence anywhere of George Lucas trying to justify that kiss between Luke and Leia? I’m old enough to have remembered the limited Star Wars universe of 1980 and how it was clear that Han and Luke were played as romantic rivals for Leia’s affections. In this new, retconned world of “Greedo Shot First!” nonsense—as well as other things in the “Special Editions”—has anyone from the Lucasfilm/Disney camp such George Lucas himself justified oddness of that kissing scene in The Empire Strikes Back in light of the brother/sister narrative.?