“It’s not deliberately camp. I made the film in a 1930s style. It’s based on a Saturday matinee serial from the 1930s, so the acting style is very 30s, very theatrical, very old-fashioned. Method acting came in in the 1950s and is very predominant today. I prefer to use the old style. People take it different ways, depending on their sophistication.”
https://www.theguardian.com/culture/2002/may/16/artsfeatures.starwars
It’s supposed to be musical and designed in lyrical tone. Star Wars dialogue with George was always designed to be like old cinema.
And to clear up a couple of misconceptions.
George had nearly all of The Empire Strikes Back written before Lawerence Kasdan polished it up. See J.W. Rinzler’s conversation with Rick Worley for more details.
Harrison Ford may have had misgivings about the dialogue but he did think it worked. He said as much to Time back in 1977. You can see the quote on Mike Klimo’s Instagram.
https://www.instagram.com/p/BW5ZBJogast/?igshid=12uundmrs6kxg