Agency itself is not necessarily a good thing. It becomes a good thing as a toolkit, developed by people who are also high in conscientiousness, who want good things for the world, and who might otherwise be constrained by narrow perspectives on what counts as socially acceptable action.
you can be high agency without being highly ambitious. That might describe somebody who is highly agentic in shaping the kind of personal, emotional, or spiritual life they want, but who is not especially motivated to succeed financially or professionally.