No, there’s no point in time that would grant Israel legitimacy. The same way America/Canada has to confront their colonial past over Native Americans, or Australia with the Aboriginiees, or any other number of colonial nations, despite the time that’s passed since. I’m sympathetic to the plight of Israelis that were born into an apartheid system and now feel they have a claim to the land and a life there, but by saying they have equal claim by nature of being born there you let time erode the culture and heritage of the Palestinian people that were also born into that space, but into a different and much more unfair system. That concept of time granting increasing legitimacy to Israel as a state is exactly what Israel needs, the longer it’s able to commit these atrocities to enable further existence of the state of Israel, the more and more ridiculous “why not just give it back?” Seems as an argument.
Palestinians do have more of a right to violence, but I don’t think that violence should be directed at those of whom don’t have power within that system (civilians). Violence is a tool of the oppressed to fight back against the oppressor. The child who was born into Israel and hasn’t even been able to grow enough to form an opinion on the system they were born into isn’t an oppressor in the same way the Israeli government is, the same way the idf is, the same way other facets of the system that serve to squash Palestinians are, and as a result should not be a target of that violence. That’s abhorrent. But Palestine’s very existence, these people’s lives are at stake if they don’t fight back. Ignoring how unfair a two state solution even is to people whose homes were robbed from them in 1947, Israel hasn’t even been so much as willing to come to the table regarding that solution, so Palestine needs to fight for its continued right to exist outright, and that’s a natural consequence of Israel trying to weaponize the passage of time to further legitimize it’s existence as a state, and giving them that is dangerous for the lives of those Israel has a vested interest in murdering.