Lucas changed his own rules with each new movie he made. If new creators aren’t allowed to expand our understanding of the universe as Lucas did, why even make new films?
Yes, Lucas has said a great many things that do not hold up. He is great at the ideas but not so great at explanations. He thought he was creating something he called space fantasy but it is solidly science fiction. I am very familiar with the tropes of science fiction prior to 1977 and Star Wars fits them all. Even the Jedi and their mind reading and telekinesis are just par for the course in science fiction. Nothing new at all. Well, lightsabers were a bit new, but none of the rest of it. So I take a lot of what he says with a grain of salt. Like twins. He had the idea of siblings and twins in the beginning, but he dropped it and brought it back for ROTJ. And then Leia remembering her mother and her mother dying (let’s be generous) hours after her birth. You can explain it away with a force connection that Luke didn’t have, but his changing story ideas make it interesting to wade through the continuity issues they create.