Burstar the Magnificently Mediocre Community Goals being a player affected part of the story are an illusion. They are binary 'choices' in which both paths inevitably lead to the same future just with a different historical footnote.
It's certainly not as-marketed, and there are fixed points to the story, but that doesn't mean it can't be influenced. Indeed you acknowledge this yourself - just reducing the different outcomes to "historical footnotes".
The BGS is a minigame unrelated to (but affected by) GalNet events.
What are your thoughts on this article, specifically:
“Meanwhile, many Federal factions are carefully observing those who did become independent. Their future success or failure may well determine whether or not this rebellion continues.”