A monarchy should be with an ethnic state. I don't see why they should be separate. The only tension is historical, but a monarchy and a nation are two of a kind.
>civic nationalism
Foolish. Citizenship is very insincere and no matter where you are, you will always be you. A people as we know them are drawn through their history and heritage. That includes the pagan and Christian histories. That includes every trauma and every victory. Every rise and fall accounts to the names of a people and it synchronizes when they have a sovereignty. A sovereignty and a people belong together.
>globalism
Universal fraternity is foolish.
>which is objectively better
There are no promises here. But globalism and civic nationalism would be bound to fail, whereas a monarchy has a stable tradition in both the pagan and Christian world. It survives generations and ideas.