Track Record of Competency
Why granted Virtues are treated as evidence of practical capability and leadership fitness.
Virtues granted to an actively contributing member are more than a reward. They are also a visible record that the person has repeatedly introduced improvements that the community itself judged to be useful, timely, and worth supporting.
Because of that, Virtues are treated as evidence of capability. A person who has a strong track record of improving the community's wellbeing has shown not only initiative, but also judgment, execution, and an ability to understand what the community actually needs.
That is why the track record of improvements and Virtues matters when community members are elevated to broader leadership. The idea is that decision-making authority should flow, at least in part, toward people who have already demonstrated real-world competence in making the community better.
In practice, this becomes especially important when selecting people for the community's decision-making body, the Congress.