Joe134cd,
The problem with the point you present and that the WT endorses, none of them are supported by Jewish secular history.
The story about Alexander being shown the book of Daniel is considered Jewish legend.
http://www.jewishencyclopedia.com/articles/1120-alexander-the-great
The Dead Sea Scrolls play no part in Judaism, nor do they represent anything contradictory to what Judaism claims about the Book of Daniel. It would be counterproductive to claim that a book we cherish and consider to be the Word of God as not a prophecy if we believed it was a prophecy. Apocalyptic works were designed to be read and distributed widely during the period of political intrigue they dealt with. The book could not have reached prophetic status without some record in Judaism that this happened. The Qumran collection is not representative of mainstream Second Temple Judaism.
But this is your choice to view things this way, and it doesn't affect me as a Jew anyway. It involves your view of how we Jews understand our own Scriptures, and you stand to disagree with it and claim you have authority to say I am wrong.
And my apologies to Vidqun. I must admit that I cannot understand any of your writings, though I have tried and re-read them over the past two days. Your points completely escape me, demonstrating where I definitely am lacking. So until I can comprehend them better, I cannot claim that any of what I have written applies.