It's still something you can argue should be done even if it's not currently politically feasible. Things don't always stay politically unfeasible, but they usually don't get pushed in that direction by people not making that argument in public.
My utopian take would be that Israel should become fundamentally secular, remove references to being a 'Jewish state', grant all Palestineans citizenship and full rights, and perhaps change the name - a lot of people would say that should just be called Palestine, but frankly I think a compromise of Israel-Palestine or some other completely new name would be fine too. End the colonialism & apartheid, everyone who's there lives in peace, people who had to flee during previous wars get to come back.
I don't know that we'll ever see that, but it probably is much more unlikely if we don't try to convince people that it's a good idea.