I actually think that Auron is exaggerating the divisions amongst the Left.
Except for one - Israel vs Palestine.
And there, it is clear that pro-Israel has been expelled from the Left.
Support for every group of the “friend Coalition” of the Left is required. And the Palestinians are part of the friend coalition, and Jews and Israel are not.
Jews supporting Israel have been expelled from the Left, and they are in the process of being expelled from the Regime.