The real story in Israel is more complicated; the courts have taken power from the other branches; it's about time for there to be some kind of correction, and is often the case, the rebound might very well go too far in the other direction, ruining the possibility of a real system of checks and balances. Netanyahu himself may be going along with it to penalize the courts, but it's unlikely to help his court cases directly. The idea that it's supposed to somehow magically help him is a talking point for some of the political parties, but he would probably need some kind of new legislation to grant him immunity.