We need to decide whether the MO is wrong because the ideology was wrong from the beginning and the followers are innocently being taken in, or if it’s wrong because its followers have deviated from its original purpose and used it as a means of violating halachah. There’s kind of a lack of consistency.
Now to indulge the current conversation a little: I don’t think pleading ignorance gets a person off the hook for dealing with A”Z. If a Jew converted to Buddhism, C”S, because he thought it was fine, you still couldn’t give him money that he might use to buy idols (e.g. trading with him before a Buddhist holiday, if there is such a thing). So even in HaKatan’s model in which the Zionists are unwittingly guilty of A”Z, the question of how to do dealings with them still stands. If someone was unwittingly breaking Shabbos, even if he isn’t quite as culpable because of his lack of knowledge, it’s not like you can benefit from it.
P.S. Thanks, Comlink, I’m glad you like it.