You may believe that such is true, but he doesn't. The Jewish understanding of redemption is very different than typical Christian doctrine. Not a strong argument, because it is grounded in the legitimacy of Y'shua being the Messiah, which he would reject as idolatrous.
I've often said that while God is not a conservative, Satan is almost certainly a liberal.
The propensity to a subjective sense of reality is inherent to liberal emoting, er... "thought." It is making G-d in their image, effectively to be little tin gods themselves. Such IS the essence of Satan's pitch, the source of identity of which you speak.
Perspective does not change the truth.