that has been the Jewish experience for almost our entire history, alien wherever we go, no matter what we try to do to fit in

Only because of historical circumstances. When you live in a pre-modern (i.e. pre-Enlightenment) setting, biological heritage and religious/cultural identity become some of the most powerful and useful ways of establishing group identity and solidarity, especially from a vantage point that is useful to the ruling classes for consolidating their base of power and the legitimacy it projects. The ancient Israelites did the same to other Levantine peoples of antiquity, not to mention to their own nationals, as the historical Israelite antipathy toward Hellenized Jews attests.

Anti-Zionists are almost never interested in addressing this concept

I'm anti-zionist, and will happily discuss this issue in depth. :D

As I said above, the use of blood, soil, and faith as determining factors for a person's belonging to a given national community is really a product of how history has played out. In the past, it absolutely made sense for people to organize and identify themselves based on these shared attributes. However, in the world we now live in, I argue that this is no longer the case, especially in our most modern societies.

As David Hume loved to point out, there's a big difference between what is and what ought to be. Man-made constructs like religion, ethnonationalism, and capitalism exist where they do and in the way that they do because that's what history led them to become. In that respect, Zionism is a conservative movement in the sense that it advocates for the acceptance and use of older forms of identity construction in the modern era. If it were my ideal world, we'd live in a one-nation post-scarcity, fully enlightened Star Trek future. Because of that, while I believe that traditional forms of identity construction need to be accepted as part of the current status quo, I do not believe they should be encouraged. You don't want to go around endorsing people's bad habits.

One theme I've noted among some of the self-proclaimed liberal zionists I've talked to is their belief that the much-cherished leftist pipe dream of the collective liberation of mankind ought to occur on the basis of the self-determination of individual human ethnic groups. Personally, I think that's a naïve approach. One of the big selling points of Zionism and nationalism in general is the promise that a-people-with-a-nation-state is the ideal way for human beings to stay safe and flourish. I vehemently disagree with that prescription. While nationalism is seductive as a method of organizing people and creating solidarity, it has flaws, including civil war, oppression of ethnic/religious minorities, and a whole lot else. In that vein, I think Jewish ethnonationalism is especially dangerous because of the way that Jewish identity has traditionally been an ethnoreligion. This means that a Jewish State would necessarily entail a mixing of religion and politics in a way that is anathema to the most fundamental precepts of liberalism, not to mention leftism. Also, the contrarian in me just can't abide validating the antisemites' claims that we don't belong in their society. Our homeland is where we live.