TIL the original Star Wars trilogy was influenced by the Vietnam War

Influenced, yes, but it's also important to keep in mind that Lucas was working with a lot of influences, including some that make no sense if viewed as a cohesive allegory. For instance, the power relationship of the Rebels to the Empire has parallels of the Viet Cong to the US military. In a cut scene, though, Biggs specifically (and tediously, hence the cut) cites the Empire's nationalization of private industry as influencing his decision to join the Rebels.

Lucas has always been a well-meaning, left-leaning, white American boomer. He includes relevant ideas based off that worldview in his work, but he's not making grand political statements or really even engaging with political thought in a serious manner. Star Wars is probably more timeless and better for it.

Star Wars was influenced by a lot of things. Lucas has talked extensively about where the ideas came from.

Literally all movies were influenced by the Vietnam War in that era. That's like saying 2000s and 2010s movies are influenced by the Middle East Wars.

You should listen to the Rest is History podcast episode 412: Romans in Space: Star Wars, Dune, and Beyond

If I remember correctly, George Lucas was involved with Apocalypse Now before splitting off to work on Star Wars, so its definitely plausible that there was conceptual carry over between the two.