Except that those raising these objections are guilty of doing the same thing. The level of hypocrisy in the American Jewish discourse on Israel has reached a new high.
The same organizations which have historically called for unity, sanctioning those who disagree with all but their own point of view, suddenly care about discourse and free speech. Organizations which mercilessly berate their counterparts with misrepresentations and smear jobs have evidently seen the light about having a civil conversation about Israel. In this twisted reality, calling on Israel to embrace the two-state solution is bad for the US-Israel relationship. Defaming the President of the United States is not.
American discourse on Israel requires both liberal and conservative voices to operate effectively. To productively contribute to vigorous debate over the US-Israel relationship, the organizations involved in this tiff need not change what they believe nor how much passion they invest in issues about which they care deeply. They just need to grow up. Political maturity will sustain the US-Israel relationship, but political hackery will destroy it. This pro-Israel infighting helps no one.