As I understand it, rabbinical Judaism teaches that the Messianic promises of the Old Testament do not apply to Christ or His followers and characterizes the opposing Christian tradition as Replacement Theology or Supersessionism. Hagee and the "Christian" Zionists go along with this rabbinical teaching out of an apparent phobia that disagreement would expose them to charges of "historical Christian anti-Semitism."
I haven’t heard that about Haggee but I would sincerely doubt it. Judaism does teach that the promises are not for the Gentiles but Haggee and others do not agree with that and say so. They understand the that the Jews don’t understand but certainly don’t capitulate to avoid being viewed as anti Semite.