The Christmas Carol is about vocation.  Scrooge has to learn to love and serve his neighbors, which is the purpose of all vocations.  As an employer, he has to learn to see employees like Bob Cratchitt as human beings with families and with struggles, to love them and then to serve them, even as they serve him in their work.  Scrooge has to learn to love and serve his family, including his earnest nephew and his bride.  He has to learn to love and serve his neighbors in the London alleys who are poor and destitute.  He has to learn to love and serve the urchins in the street and the passersby in the square.

The catalyst for this archetype of self-seeking capitalism discovering the true purpose of his vocations in the family, the workplace, and the community is the spirit(s) of Christmas.

Today, too, Christmas has to do with our vocations.  Consider our "secular" sentiments and customs:

"Christmas is a time for family."  Our vocations in the family.

"Christmas is for kids."  Family vocation + homage to the Christchild.

Office parties.  Our economic vocations.

Shopping.  Our economic activities as part of the exchange of vocation. Whereas usually, our economic activities pursue our rational self-interests, our Christmas shopping makes us think about the interests of the neighbor we are shopping for.

Gifts.  Giving and receiving gifts is the image both of the grace of God in Christ and the mutual giving and receiving that takes place in every vocation.

Is Christmas too materialistic?  Well, it's not as materialistic as God becoming flesh, redeeming our sinful flesh, and sending us back into the material world to live out our faith in love and service to our physical neighbors.