This is a popular opinion that I don't share. Sure it has some Western movie elements, but it's not just a Western set in space. It's an exploration of what can turn a person fully into our shadow selves, and the struggle between forces of light and darkness. A few years ago my https://medium.com/know-thyself-heal-thyself/i-am-a-jedi-58521a4b55db started with:

"Popular belief posits that the Star Wars saga, particularly the first episode released — Episode IV, that introduced all of us to the main characters, amounts to a repurposing of classic Western films pitting the good guys against the bad guys. I discerned a few weeks ago that I disagree. By cladding the stormtroopers in white, George Lucas gave us a hint that the story involved much deeper concepts than the human-constructed binaries of good and evil. Darth Vader, the former Jedi Anakin Skywalker, did not become evil — rather his ego became so dependent on the trappings of attachment that his soul became imprisoned by the darkness that enveloped his ego. Logic devoid of emotion. Pure animus. Divine masculine unchecked by the divine feminine."