Hunger Games is about revolutionary anti-imperial class struggle
George Lucas said the Empire is inspired by America and the Rebels by the Viet Minh
The Matrix was created by a trans woman and at least partly an allegory for being trans
Divergent is shitty lib fanfiction but very obviously anti-conservative
Alan Moore was a communist or anarchist
wow these movies are just like January 6th when we resisted communism by smearing our shit on the capitol walls!! 
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Vague is probably not the right word.
It's a story that relies on aesthetics a lot, which is fine in and of itself, but people can imprint on aesthetics they like fairly easily provided they aren't too blatant with their imagery.
There's no real discussion of the politics of The Empire or Rebels, The Empire is just bad, the Rebels good. Sure The Empire all dress like Nazis and are clean cut white dudes with British accents, and the Rebels look more scruffy and rag tag, but I can easily perform the mental gymnastics necessary to take a right wing read of that.
But when the creator says the rebels are based off the Vietcong and when you combine that with the fact that he believed filmmakers in the USSR had generally more freedom to be creative compared to western filmmakers, it doesn’t seem so vague at that point.
In this day and age it doesn't surprise me that people can take a story that's very overt and wrap it into something it's not. That doesn't mean that it's a correct reading.