Arianism is not just about Christology.  It’s about theology proper.

Arius said that God made His Son before the creation because the creation could not endure the “untempered hand” of the Father.  It needed the Son as mediator.  Athanasius sees in this a false idea of God.  God, He says, isn’t too proud to create the world; the small things of the world are not unworthy of His attention.

The God who clothes lilies and watches sparrows must surely be the kind of God who wills to make lilies and sparrows.