Which is why his work is a pile of dung. Dispensational premillenialism is a natural result of the historical grammatical approach to biblical interpretation combined with proper theological method. What he is proposing as an explanation is incoherent.
Exactly. Gary DeMar has absolutely no foundation upon which to make his argument against dispensationalists (even ignoring the fact that his arguments about Greek demonstrative pronouns are not sound in the least). DeMar's eschatology, and Reformed eschatology in general, are based upon a completely figurative and exceptionalist approach to Biblical interpretation - in essence they twist the Scriptures to force them to fit into a historicist mold. The way DeMar and other anti-dispensationalists approach the Scriptures essentially turns the Word of God into a "choose-your-own-adventure" book like the ones we read as kids.