I like a bit more complexity in my sci-fi settings. I believe most people will see the side they most identify with as “good”, unless they’re the side that is slaughtering innocents, etc. As we have seen historically, not every faction acting out of righteousness or good intentions is beneficial (UN forces seem to not be well regarded anywhere they are sent, regardless of their national make-up).
But to answer your question, yes I do think that most game settings tend to be very delineative as to “good” and “bad”.
"I saw this in a cartoon once, but I'm pretty sure I can do it..."