My only thought would be this: did “Lucifer” cease to be referred to that way (including, I believe, as “son of the dawn”) when he attempted his own coup and was ousted from Heaven?

“How you are fallen from heaven, O Day Star, son of Dawn! How you are cut down to the ground, you who laid the nations low! You said in your heart, ‘I will ascend to heaven; above the stars of God I will set my throne on high; I will sit on the mount of assembly in the far reaches of the north; I will ascend above the heights of the clouds; I will make myself like the Most High.’ But you are brought down to Sheol, to the far reaches of the pit.” ‭‭Isaiah‬ ‭14:12-15‬