Doesn't change anything. Zionism brought and keeps bringing most of these splintered groups back together and recreate the nation. Also in Biblican times two kingdoms splitted soverignty and sure were all type of different groups. And still the right of return will be ensured to what the Ortodox establishment defines as a jew. If a palestinian from Ramalah wants to become a jew, he may become as everybody else, and probably could become a new immigrant. S. Sand has not undermine zionism or anything else. He reinvented himself, maybe.
Migrants rush train tracks as Budapest station reopens (dpa)
from the article: Comment / Settlers can stay, but only as citizens of Palestine