But political Zionism is not the only type of Zionism. There are: Labor Zionism, Revisionist Zionism, Cultural Zionism, Religious Zionism.
Labor Zionism has failed, in the sense that the modern day Israel is neither socialist* nor agragarian. Most of the manual labour is done by Arabs. Indeed, from a Labor Zionist perspective, the disconnect between Israelis and the physical land is a tragedy. Thus, one who fights for the modern day Israel to adhere to the original, still unfulfilled vision of Labor Zionism is Labor Zionist. His or her type of Zionist vision is not outdated precisely because it has yet to be fulfilled.
Revisionist Zionism is more nationalistic than Labor Zionism and not oriented towards socialism. It's focus has traditionally been on territorial gain; it wanted both sides of the Jordan river to be incorporated into the Jewish state. It has not been fulfilled per se, but has been incorporated into the mainstream modern religious Zionist movement.
Cultural Zionism envisioned creating a new national Jewish culture. Of all the types of Zionism, this one has failed the most miserably. There is a Jewish religion, but it is not one that most Jews follow. There is Israeli culture, but it is not shared by Jews world-wide. Many Diaspora Jews do not speak Hebrew, without which Israeli culture remains largely inaccessible. The two main aspects of nationhood are a shared history and a shared culture. Jewish history has not been shared ever since the beginning of the exile 2000 years ago, but it does have one common element: No matter what region of the world Jews lived in, it is almost definite that at some point some anti-Semitic event happened there. As for Jewish culture, that is harder to distinguish. After all, what is culture? Two main elements are religion and language. Religion has been largely abandoned. In order to create a Jewish culture, one must turn to language. If one were to make Hebrew the language of Jews world-wide, they would have succeeded in fulfilling a large part of cultural Zionism. There is a need for cultural Zionists, for the vision of cultural Zionism grows further from fruition as time goes on and Diaspora and Israeli Jewish sub-cultures develop and become more distinct from each other.
Religious Zionism is the belief that resettling the land of Israel and establishing Jewish sovereignity there is the beginning of the redemption and will eventually result in the coming of the Messiah. The movement always emphasized a connection to the land, which is believed to be promised to the Jews by God. After 67, this connection, combined with an intense nationalism reminiscent of Revisionist Zionism, led to Religious Zionism's being closely associated with the Settler Movement. Since the ultimate goal of modern mainstream Religious Zionism is the reclamation of the holy land and the coming of the Messiah, there is always work to be done - in the form of building settlements and doing good deeds that can help speed the Messiah's coming. Religious Zionism remains unfulfilled as long as the Messiah is not here; it is the Messiah's coming that will usher in the post-Zionist era. (Note: There are some left wing Religious Zionists, though they're a minority.)
So are we living in a post-Zionist era? More than I am convinced that the question does not have an answer, I am convinced that it is irrelevant. So why did I just spend a blog post ranting about it?
* It does have strong labor unions and certain socialist elements, but not nearly to the degree envisioned by the founders of Labor Zionism.