The passage refers to more than one person. The same goes for other scriptures, like the "Judas" reference in the Psalms. I believe some of the Messianic passages in the psalms also fall into this category.
A man was not: "Fallen from Heaven"
Regardless of whether we called him "Lucifer" or any other name, that is who we are referring to. The same goes for the name "Jesus" which is an anglicized version of Yeshua. We know who we are talking about.
The Holy Spirit has spoken of this matter to the church and this is not just a traditional gaffe made by the Roman church.
Shamayim, the word translated as 'heaven' does not always mean the realm of Yah. That is considered the '3rd heaven' while the 'air' and the realm of the stars are considered the 1st and 2nd heaven but use the same Hebrew word. Both the air (clouds) and stars are mentions but you are assuming the 3rd heaven.
A man can fall from the Tower of Babel after setting himself up as a god to rule over man and Yah did cast down that evil.
"Lucifer" was trying to ascend into the sky above the clouds. He was on earth trying to elevate himself and was cast down in death. He is trying to elevate his position above the 'morning stars' that sang when Yah laid the foundation of the earth.
"Lucifer" is a man. It says so right there in the passage in the verses you ignore. It also mentions his father, Shachar. He is the 'shameful king' of Babel that had people rejoice when he dies, his body decays, is eaten by worms, cast out of his grave and his spirit descends into the pit while other spirits in Sheol call him as weak as they now and 'a man' that caused all the problems.
Augustine spread the doctrine you are spouting, not the Holy Spirit.
Even in Eze 28 in the 3 prophecies to the pagan gods of Tyrus/Sidon it claims they think they are gods but really only man.
Eze 28:
2
Son of man, say unto the prince of Tyrus, Thus saith the Lord GOD; Because thine heart is lifted up, and thou
hast said,
I am a God, I sit in the seat of God, in the midst of the seas;
yet thou art a man, and
not God, though thou set thine heart as the heart of God:
3 Behold, thou art wiser than Daniel; there is no secret that they can hide from thee:
4 With thy wisdom and with thine understanding thou hast gotten thee riches, and hast gotten gold and silver into thy treasures:
5 By thy great wisdom and by thy traffick hast thou increased thy riches, and thine heart is lifted up because of thy riches:
6 Therefore thus saith the Lord GOD; Because thou hast set thine heart as the heart of God;
7 Behold, therefore I will bring strangers upon thee, the terrible of the nations: and they shall draw their swords against the beauty of thy wisdom, and they shall defile thy brightness.
8 They shall bring thee down to the pit, and thou shalt die the deaths of them that are slain in the midst of the seas.
9 Wilt thou yet say before him that slayeth thee,
I am God? but thou shalt be a man, and no God, in the hand of him that slayeth thee.
Now the 'prince of Tyrus' was the god Baal. He was a secondary god of Tyrus, one of the Canaanite pantheon. He was a man that claimed god status because of his lineage. You would know him as Nimrod who was worshiped as Baal, Tammuz, Orion, ... after his death. He was a 'son of man', ie the son of Cush. It was via his mother that he claimed god status as Nephilim. He is the 'nephew' of the shameful king of Babel that is cast down in Isa 14. It even mentions 'the nephew' in that passage.
The pagan gods tried to elevate their status to that of 'gods' but Yah classifies them as 'man'. They die like man. They descend into Sheol as the spirits of man. They become weak as the other spirits of the dead.
Even a 'cherub' that is born on earth is 'a man'. He is NOT some leader of a mythical rebellion of 1/3 of the angels of Yah. That is taken from another passage taken totally out of context. It is talking about an event in the tribulation and isn't even a reference to Yah's angels but the pagan 'host of heaven (the 2nd heaven)'.
Isa 57:9 And thou wentest to the king (Molech) with ointment, and didst increase thy perfumes, and didst send thy messengers (demons) far off, and didst debase thyself even unto hell (sheol).
Why is offerings and sacrifices to Molech 'debasing thyself unto Sheol'? What 'messengers' are they sending? This passage is about ritual witchcraft conducted in Molech worship. The entire passage is about the worship of the Baalim.