In almost any contemporary discussion of politics, today’s experts will tell you that metaphysics is irrelevant.
This is because we are discouraged today from taking a truly totalizing perspective–meaning, a perspective that attempts to comprehend the totality of what’s going on.
Academic work on politics is specialized. It focuses on a specific phenomenon, or issue, or site. This is partly due to the limits of what it is possible to work on responsibly. It is also partly due to the limitations of agency. A grander view of politics isn’t useful for any particular agent; they need only the perspective that best serves them. Blind spots are necessary for agency.
But universalist metaphysics is important for politics precisely because if there is a telos to politics, it is peace, and peace is a condition of the totality.
And while a situated agent may have no need for metaphysics because they are content with the ontology that suits them, situated agents cannot alone make any guarantees of peace.
In order for an agent to act effectively in the interest of total societal conditions, they require an ontology which is not confined by their situation, which will encode those habits of thought necessary for maintaining their situation as such.
What motivates the study of metaphysics then? A motivation is that it provides one with freedom from ones situation.
This freedom is a political accomplishment, and it also has political effects.