The original Star Wars movies were political, but only baseline. They dealt with the idea of rebellion, Empire, and tyranny, but generally they weren’t terribly divisive, because they had a clear good vs evil narrative. Diversity was incidentally included, because the stormtroopers were uniform Nazis, while the rebels were diverse (at least the side characters). The main good guys were all white (except Yoda), and mostly male.
The prequels were especially political, considering half the movies take place on the capital planet, much of that in the Senate or with the Chancellor/Emperor. They show the fall of the Republic (mimicking Rome), which was especially poignant in the Bush era of the War on Terror and the Patriot Act. We saw the Senate and House giving power to the Executive branch, and undermining constitutional rights. The idea of Bush becoming an emperor of sorts wasn’t too outrageous in that light. Again, we see incidental diversity in side characters, but the main cast (Obi Wan, Anakin, Palpatine, Padme) are all white humans, and mostly male.
Now we’re in the post-racial Obama era, where, ironically, race, sex, and sexual orientation are the only things that matter. This is reflected in the sequel trilogy. The inclusion of characters for diversity points (Finn, Rey, Rose, Holdo, Maz Kanata, partially Poe) is obvious, and made even more obvious when the villains are primarily white men (Hux, Kylo Ren). Even worse, they killed off the original cast (Han and Luke, leaving Leia).
The movies were always political. But they dealt with politics of ideas, ideologies, governance, not just tribalism. Because of the ambiguity of who the real underdogs are, the old evil empire vs good rebellion falls flat, leaving the in-your-face inclusionary identity politics.
The debates of tradition vs progress, socialism vs capitalism, the working class vs the rich elites, proper economic and social policy are over, and now it’s all about the plight of degenerates, women, and brown people. Enlightenment values like freedom, justice, and democracy are now viewed as impediments to the emancipation of brown people. The fall of Star Wars is a reflection of our loss of these ideals in favor of base tribalism.