Certainly it can be said that evolution IS intelligent design. Adapt to a changing environment and survive -- fail to adapt, and perish. Spiritual laws, however, are unchanging; those human civilizations that fail to adapt to God's straightforward laws for thriving in our spiritual environment (laws such as the ten commandments, seven deadly sins, etc.) perish. Those civilizations that work toward adapting their behavior to those rules, thrive. Darwinism and evolution is about how our earthly bodies may or may not proceed on an earthly plane; God's laws are about how we proceed on a spiritual plane. To me, there is a wonderful symmetry at work, all part of God's design.
Evolution doesn't challenge God. It challenges men.
It is a poison pill - an earthly distraction from the spiritual that leads to pride, false witness, and anger. A real prescription for spiritual damnation.