Fuck all to show for it? Democrats literally can't tell him "no, stop doing genocide" or they'll get primaried against "centrists" with twice their cash.
I think it's meant more as "Bibi, specifically, has failed to get the ideological allies of Bibi into power" rather than "Israel has failed to ensure that both parties are ideological allies of Israel"
The distinction is important insofar as Netanyahu's alliance with the GOP is concerned, as opposed to the general bootlicking attitude of American politicians towards Israel.