Valid points... however, my underlying premise was that the "reign in the influence of Israel" efforts aren't being done any favors by having cheerleaders celebrating other problematic ideologies. People are left with the impression "So to critique Israel, I have to pretend that Palestinian & Iranian culture, left to its own devices, is some sort of beautiful thing worth embracing??"
I don't think it's a valid approach to try to critique Israeli governance by pretending that "everyone who's against Israel must be 'the good guy'"
I've used the cartel wars as an example before.
The Medellin Cartel was brutal, murderous, and lacked any and all empathy... their main rival was the Cali Cartel (who was not quite as bad, they tried to be a little less violent, but still pretty bad). I don't think someone's advocacy would be done any favors by wearing a pro-Pacho shirt to demonstrate how "anti-Escobar" they were.
As far as our involvement being the motivation for Islamic terrorism, I don't know that theory holds as much water as people think it does.
The history of conflicts with the Barbary pirates show that one doesn't need to be interventionist in order to draw Islamic ire towards those who are non-Muslim.
I still remember this infamous "Hitch-slap" in which Hitchens put Bill Maher in his place when Bill was trying to assert that the main reason Islamic fundamentalists hate us is because we intervene in middle eastern affairs.
I say all of that to basically say: It doesn't do anyone any favors to try to protest Israel's violations by giving lip service to ideologies that would be just as problematic even if Israel didn't exist.
That's why I think it's important that some mainstream critiques of Israel come from sources that aren't going to try coddle Islamism in the process.