I don't think you can't be critical of that sentiment.
I do dispute that it was a a sentiment at all, at least in grandparents' case. It wasn't ideology either. It was just a fact. They couldn't stay in europe. A right of return to a Jewish State^ was the only practical way to survive, besides conversion. My grandfather considered that route, as an atheist, but his first wife dissented. He also looked very Jewish. That was their conclusion att. You are free to disagree.
The majority of post war immigration was non ideological. There wasn't much daylight between ideological and non-ideological zionism, for the most part.
It also (in my opinion, this time) proved true for 1.5 million people who found that they could not stay in Egypt, Iraq, Yemen, etc. The new world wasn't an option for them, as it had been for many europeans.
I might agree with you that nation states, or the common form of nation state, isn't ideal. It is quite terrible in its purist form. However, I don't see why this criticism is so often leveled at Zionism exclusively. I'm also Irish, and have never heard such a criticism of Irish Republicanism. Besides that, lots of countries' have rights of return, ethnonational symbolism, etc.
Meanwhile, most Israelis supported South Sudanese and Kurdish independence for similar reasons. Me included. I think that Kurds have been screwed since the fall of the Ottomans, because they ended up without a state. Lebanon was founded on this premise. Pakistan. Lots of examples
^Zionism originally called for a homeland, not necessarily a state, and hoped to achieve this as cultural autonomy and migration rights under Ottoman sovereignty. Nation States were not the norm, when zionism was first conceived.
+The downvotes are not from me.