Though he's curious about the answer to the question, Cid assumes it's because Helico had the power to inspire her people. Besides, he thinks something is immediately much more critical.

"We must needs move quickly, then, and secure you and your grandmother safe passage out of the city." Even if Tristan doesn't consider himself proud of his lineage, the fact remains that he's like to be one of the only capable of inspiring Venera to return to the greatness of its past.

He hesitates, because it risks revealing too much to people who are still his enemy, but after a moment he relents, because it's important Tristan understand where he's coming from. "I will not abandon Venera to its fate. We will free your people, even if I am the one leading my allies."