Zionists are not following Judaism. If you ask some orthodox jewish people living in occupied Palestine they’ll tell you they are in exile and are not allowed to have their country until the arrival of the Messiah, that they are simply living in that land that belongs to whoever it belonged to.
Zionists on the other hand are imperialist colonizers who took the land from its owners. So asking for the land to be returned to its rightful owners is legitimate, and this translates to the end of the existance of the state created on wrongfully seized land.
This should not be conflated with eradicating the people. The people could live there with the local Muslims, Christians and Jews as they did before. Although I know we don’t live in a fairy tale. If the occupying state is dismantled, how can one live peacefully with the people who tortured you, your family and society for decades and made your life hell…