On anoter note, this thought came into my mind after watching Puccini’s Turandot the other day. The story is just several paragraphs long, there’s hardly any character development, the musical themes are repetitive and the whole thing lasts about 2,5 hours. Yet no-one seemed to complain that the opera was dragged out. I thought it was quite excellent, actually, but maybe I’m just easily entertained.
Nobody goes to the opera for the plot (well, except Wagner maybe). Opera is basically highbrow musical revue: performance numbers stitched together with a threadbare 'plot', plus costumes.
And TH: DOS is sort of a "CGI opera", a collection of f/x setpieces there merely for their own sake, with a threadbare plot made of 10% Tolkien and 90% PBJ wibble just to hold the Beheading Ballets together- like a Kill Bill, except without Tarantino's wit.
Or really, the proper comparison is porn, which exists only to present sex scenes with the barest pretense of a plot to string the bonking on, said bonking being the whole reason for the enterprise's existence. What DOS actually is is Violence Porn, just like a cheap kung-fu movie with a bigger budget.