I'm not following your reasoning here. When people called South Africa apartheid, they didn't mean it (SA) had no right to exist and that it should be eliminated. They simply wanted the powers that were in SA at that time to change the system.
Am I taking you up wrongly?
I think they did. Anti-Apartheid campaigners (the vast majority of people in South Africa) wanted the regime scrapped and uprooted. The mountains and the rivers of South Africa would stay, and in that sense it was to be the same country, but in every other sense it was to be a different one. They wanted a new nation with new institutions re-founded on entirely different principles. A non-racial democracy in other words (ie the system that currently prevails inside Israel).
I'm maybe not the best person to say what someone like Asam (on this thread) wants for Israel or Palestine. But I don't think he wants the two-state solution! He is an anti-Zionist clearly, but what does he think should replace Israel? I would imagine he wants a new country, with new institutions, re-founded on entirely different principles. The rivers and mountains will stay, but everything else will change.
He must want this since he thinks Israel is "a racist apartheid state, much worse than the regime that was present in South Africa" and that "anyone who supports Israel is a cheerleader for ethno-supremacist policies deliberately conceived and implemented to disenfranchise, ethnically cleanse and remove Palestinian people from their home lands."
Pretty strong stuff! He also compared those people who defend Israel's right to exist to the Ku Klux Klan, which shows what he thinks of certain fellow-posters on RAWK and, arguably, what he also thinks about Jews.