Have you not been following the news on this? There is an actual definition of genocide in international law. "The definition contained in Article II of the Convention describes genocide as a crime committed with the intent to destroy a national, ethnic, racial or religious group, in whole or in part. "
South Africa will not be able to make their case, which is probably why they asked for an extension on the date to provide evidence. No rational person can conclude from the facts that Israel has demonstrated the intent to destroy the Palestinian people, in whole or in part.
You don't have a grasp of the history. You make it sound like the Palestinians were actively working towards peace and only became radicalized 30 years ago, which is simply untrue. The Palestinians have been radicalized since Arafat became Chairman of the PLO in the 1960's. The PLO carried out their first terror attack years before the 1967 war, before Israel even came to occupy Gaza and the WB. The 1948 war was literally a war of annihilation carried out by several Arab countries (and thankfully they lost).
Even Arafat's supporters blame him for walking away from the negotiating table at Camp David. Peace was in sight and he rejected it. Abbas was offered almost everything in 2008 and again they rejected it. Do you know why? Because they have never been interested in peaceful coexistence with Israel. Never. They have rejected every partition plan and every peace deal because nothing less than all of it is acceptable to them.