It’s complicated. They don’t have the ability to bring down the government but both Gantz and Gallant are much more popular than Netanyahu. Netanyahu’s choice (again) comes down to placating the far-right to keep his government in power in the short-term at the expense of further alienating the Israeli public. If he bows to this pressure, the far-right might topple his government immediately. All paths probably lead to electoral (then legal) doom for Netanyahu at some point.