I do not see your evidence that “morning star” is an exclusive reference to Jesus.
Both Satan and Jesus are referred to in the bible as rulers in several places.... That does NOT make them one in the same.
The problem is NOT the translation... the problem IS with the English language itself.
Going from Hebrew/Greek to English is like trying to convert a 10 megapixel bitmap image into a 64 color palette GIF image... Your going to lose some quality.
Good analogy
I do believe we have a winner here folks.