The requirement for all members of the target group to die in order for it to be called genocide is fallacious and not historically acccurate.

Was it genocide of the Native Americans, since 'they survived'? Was it genocide in Australia when white europeans took the land from the prior caretakers?

The answer: yes of course it was. Genocide doesn't mean total eradication - it means, attempted total eradication. In Gaza today, the lifestyles of the Palestinian peoples have been completely eradicated, and it will be years before they recover.