Just want to repeat the comment you hid there in case it's relevant to the point being made.
They can also remain in Palestine and live alongside native Palestinians or return to their home countries under the right of return.
The point is that ethnic jews would no longer have the exclusive right of self-determination in Palestine.
Well if they were subject to a differen't ethnonationalist state who had a monopoly on the use of force against them, that would be really bad.
Thankfully, that has never happened before.