Jesus was employing the use of fiction, specifically a parable to show how harshly earthly rulers deal with servants who do not show a return on what is entrusted in them - for the purpose of teaching that God expects nothing less from our stewardship as a much more gracious sovereign. Luke places this teaching strategically between the story of the tax collector who came to understand his responsibilities and was forgiven of all his dishonest dealings and the triumphal entry into Jerusalem where the passion would take place. He was showing that with a great gift, such as the knowledge of truth, there comes a great responsibility to invest ourselves and our knowledge into others.That is my understanding. The treatment ofn the "enemies" is part of the backdrop of the story but is not employed to describe God's ways.

Good question. Thanks for asking.