“… We are here to serve, and that requires lowering ourselves to become servants.”
So everyone should be servants, serving servants; makes no sense.
We're all called to be servants by exercising the virtue of charity, not just toward the poor in material ways, but toward everyone God places in our path.
1970 The Law of the Gospel requires us to make the decisive choice between "the two ways" and to put into practice the words of the Lord.26 It is summed up in the Golden Rule, "Whatever you wish that men would do to you, do so to them; this is the law and the prophets."27 The entire Law of the Gospel is contained in the "new commandment" of Jesus, to love one another as he has loved us.28
Catechism of the Catholic Church