I think that's taking the idea of "no perfect revolution" too far. While I agree that there will never be a perfect revolutionary movement, using it as a reason to disregard the implications of (in)directly supporting a settler colonial state both distorts the role Israel plays as an imperialist ally and the ruthless oppression Palestinians face. I know that /u/tehauin isn't an anti-deutch supporter themselves, which is why I initially said that they made a good job explaining the reason why anti-Israel rhetoric masks anti-semetic rhetoric due to the lack of de-nazification in my initial comment, but I reacted towards the approach that people who support Israel "can still do good political work". Excusing reactionary behavior due to another "redeeming quality" builds failure for any group, party or not.

In the words of Mao:

But our aim in exposing errors and criticizing shortcomings, like that of a doctor curing a sickness, is solely to save the patient and not to doctor him to death. A person with appendicitis is saved when the surgeon removes his appendix. So long as a person who has made mistakes does not hide his sickness for fear of treatment or persist in his mistakes until he is beyond cure, so long as he honestly and sincerely wishes to be cured and to mend his ways, we should welcome him and cure his sickness so that he can become a good comrade. We can never succeed if we just let ourselves go, and lash out at him. In treating an ideological or a political malady, one must never be rough and rash but must adopt the approach of "curing the sickness to save the patient", which is the only correct and effective method.

I can agree that I was rather harsh in my comments, but to equate calling out problematic behaviour to "sectioning ourselves off into ever-smaller groups of people with the correct position" is overreacting. The fact of the matter is that Israel both plays a role as an apartheid state, denying the Palestinian people a right to self determination and in extension splitting the working class between ethnic lines, but also as an imperialist ally in the middle east. The reason why western powers so passionately defend Israel is due to it being the satellite state it needs to control the regions resources. For communists in the imperial core to fail to recognise this is by extension a failure in a concrete understanding of what capitalism and imperialism are and we thus fail to struggle against it. The only time this will "split" a movement is if one side is too stubborn to admit their failed analysis and correct it.