Luke is attempting to compare evil to inanimate objects such as darkness so that God is not the author of evil.
Inanimate objects cannot do evil. Darkness cannot do evil. A rock cannot do evil. For anything to do evil it must have will or volition.
Luke wants to argue that God is micromanaging every sub-atomic particle in the universe. Now that is true to an extent. The sun, moon, stars and planets are set in their orbits by God and cannot deviate unless he wills. So, it is very true that God is micromanaging the physical world.
But God has given free will to the angels and men. This is so obvious it is hard to believe anyone could dispute it. Jesus told us to pray that God's will be done on earth as it is in heaven. Why? Obviously God's will is not always being done on earth or such a prayer would be illogical.
Men can invent evil in their own minds.
Ecc 7:29 Lo, this only have I found, that God hath made man upright; but they have sought out many inventions.
When Satan rebelled against God, this rebellion originated in his own mind and will, it was his own invention.
Eze 28:15 Thou wast perfect in thy ways from the day that thou wast created, till iniquity was found in thee.
The devil actually has much power. When God allowed Satan to vex Job, he did not tell Satan what to do. And we see Satan caused a great wind to collapse the house of his eldest son, killing all his children.
Job 1:18 While he was yet speaking, there came also another, and said, Thy sons and thy daughters were eating and drinking wine in their eldest brother's house:
19 And, behold, there came a great wind from the wilderness, and smote the four corners of the house, and it fell upon the young men, and they are dead; and I only am escaped alone to tell thee.
Has anyone ever noticed that the scriptures say Jesus "rebuked" the wind?
Mark 4:37 And there arose a great storm of wind, and the waves beat into the ship, so that it was now full.
38 And he was in the hinder part of the ship, asleep on a pillow: and they awake him, and say unto him, Master, carest thou not that we perish?
39 And he arose, and rebuked the wind, and said unto the sea, Peace, be still. And the wind ceased, and there was a great calm.
40 And he said unto them, Why are ye so fearful? how is it that ye have no faith?
This was no minor storm, Peter and several other of the disciples were experienced fishermen, yet they were afraid for their life.
This storm was not caused by God, Jesus would not rebuke his own Father. I believe this storm was caused by Satan, just as the great wind that killed Job's children, who might have been actively trying to drown Jesus and the other disciples. Foolish of course, but this does not stop Satan from actively trying. When he tempted Jesus to jump off the temple, he was trying to trick Jesus into killing himself.
So, while God certainly has control over the physical world, the scriptures show Satan has some power over natural phenomena.
Evil is real, it is not nothing like an inanimate object. The devil has real intent, he is activiely fighting God.