That's what I've always heard, and though I can't think of where I vaguely remember seeing an interview/BTS style video where he said they had to make some assumptions based only on the trailer, the poster, and things Lucas had said himself.
Spot on though, you'd think it was made after the prequels came out.
I would have said "thanks for confirming with tons of long term ecological damage what you could have done in your head in 3 minutes, or checked on the built in calculator of whatever device you're using and been done in less time than it took me to write this message that, while petty, I feel is necessary to mock the use of chatgpt."
I uh.... Don't get along with dumb neighbors.