This is the only reasonable point in support of Israel’s actions though it does not justify them

I'm not supporting Israel's actions. I think Israel is justified in killing every Hamas member it can get a bead on, but not in inflicting mass civilian casualties on a population that is supermajority too young even to have voted for Hamas in the first place, at least not without extraordinarily clear military proportionality claims (arguably present early on, now clearly absent).

But this "Nakba" stuff appears invariably to be coded appeals to a "one-state solution". Israel is a nuclear-armed state with one of the world's best trained military and a strong economy that, contrary to activist opinion, stands on its own two feet. There is only one outcome in a "one-state solution" and it's not the one you (or I) want.

It's worth pushing back on existential arguments against Israel as it's currently construed. "Mass murder of Israeli civilians is unprovoked because Nakba" is one of those. The correct response is "no, things are much more complicated than that."