say that his people were fighting to exact revenge on the Ashvendi, to help prevent other worlds and civilizations from suffering their same fate, and hope to one day return home (or create a new one; which might very well be the ulterior motive) after they have finally defeated them.
He didn't say that at all.
Nope, just fighting for a flower. Because, like, the flower makes him immortal or something. I dunno.