TL;DR, but for what it’s worth, I do think Lucas intended for there to be some amount of ambiguity here. Star Wars under Lucas wasn’t really cut and dried good vs evil, it was much more about whether the ends justify the means.
For example, the OFP encountered the YV. If you wanted to build a weapon to defend against a galaxy sized invasion force operating from planet-sized warships, what would it look like? If you wanted to rapidly militarize, what better way than to make a country arm against itself? This was actually very smart worldbuilding because it’s exactly how the United States became a military power. Before the Civil War it wasn’t. Not even close.
Now, Palestine’s calculus is that all of the people he killed and brutally suppressed would have eventually died anyway, had he not seized power. So the question is whether the ends justified the means: the rebels fought for freedom and the eventual invasion killed like trillions of people. The Empire destroyed one planet and might have been able to handily repel the invasion entirely.
For example, the OFP encountered the YV. If you wanted to build a weapon to defend against a galaxy sized invasion force operating from planet-sized warships, what would it look like? If you wanted to rapidly militarize, what better way than to make a country arm against itself? This was actually very smart worldbuilding because it’s exactly how the United States became a military power. Before the Civil War it wasn’t. Not even close.
Now, Palestine’s calculus is that all of the people he killed and brutally suppressed would have eventually died anyway, had he not seized power. So the question is whether the ends justified the means: the rebels fought for freedom and the eventual invasion killed like trillions of people. The Empire destroyed one planet and might have been able to handily repel the invasion entirely.