I sincerely think it's because mosy westnerd writers cannot imagine any form of international relations except violence. Like war and imperialism and genocide is literally their entire conceptual world. The idea that robots might show up and be like "oh cool! Meat people! We didn't even know people could be meat! That's so cool! What's it like being meat?" Isn't something they can fathom because to them the only reason anyone would go anywhere is to rob abd murder whoever they find when they get there. They're also brainpoisoned to think that their civilization of robbery and murder and genocide exists at the end of history and is the best possible kind of civiliziation, which means that any other civilization would either try to conquer them, or be conquered by them, and those are the only possible relationships that can exist.

This is why Riker is such a great character. Riker gets up and is like "i reject this notion that we ust be conqueruers or victims! There is another way! We can be lovers!". Boldly cumming where no human has come before! (Fuck off volcel pigs riker has diplomatic cummunity!)