Messiah (n.) is surely no longer anything relative, whatever else he is.
The Messiah (n.) coming to found a golden age is a hope so unlikely that calling it illusion or near-delusion depends on one's personal attitude.
Messiah (n.) is the murdered founder hoped back from the dead: the man the people had so callously killed would return and lead them, contrite, into bliss.
Messiah (n.) sent from among the Jews should have proved them chosen; instead it brought them only stronger hatred, and they got no advantage because they did not recognize him.
Messiah (n.) may be born of guilt for Moses' murder: if Moses was the first Messiah, Christ was his successor, and Paul could rightly say, "See, the Messiah has truly come. He was indeed murdered before your eyes."