Just because an expansion is released does not mean that all application requirements are thrown out the window.
You stated in your app that you have not been level 80 for very long, that is fine. What is not fine is apping to a raiding guild without proper enchants or gear. You clearly have NO IDEA how to itemize your character, and trying to bullshit your way in by stipulating that, "Death Knight specs are flexible," does not fly.
I will agree that all three talent trees of the Death Knight character can be used for both tanking and DPSing, but you took the worst aspects of two different builds, clusterfucked them together, and attempted to anecdotally legitimize it. You say you have begun to browse some of the Elitist Jerks threads, but if you had gotten past the first paragraph, you would realize that you are taking your character in the entirely wrong direction. Simply mentioning the words "Elitist Jerk" does not give you a free pass, especially if you take the literal opposite of their recommendations.
The icing on the cake would probably be your incredibly selective memory regarding your past history. There are a number of people in this guild who know you, so I find it more than a little hard to believe you don't remember them. Fudging the truth (known as lying in some circles) is never a good way to make a good first impression.
Add up all of the aforementioned, combine it with your absolute inability to make one of our three raid nights (at best your attendance would be 66%), and there is simply no way I could in good conscious pretend you had a shot at getting in this guild. I wish you the best of luck in finding a suitable raiding community, but I think you've explored all possible avenues of entry for this guild. You may not reapply.