I was deeply interested in … Zionist affairs and activities – or what was then called ‘Zionist,’ though the same ideas and concerns are now called ‘anti-Zionist.’ I was interested in socialist, binationalist options for Palestine, and in the kibbutzim and the whole cooperative labor system that had developed in the Jewish settlement there (the Yishuv) … The vague ideas I had at the time [1947] were to go to Palestine, perhaps to a kibbutz, to try to become involved in efforts at Arab-Jewish cooperation within a socialist framework, opposed to the deeply antidemocratic concept of a Jewish state (a position that was considered well within the mainstream of Zionism)
Chomsky wasn’t critical of Israel though he opposed BDS and was a Zionist.
Quote from Chomsky, on wiki
“I wanted to do kumbaya with genocidal ethno surpremacists instead of siding with the colonized but then didn’t”
Notice how you didn’t post the BDS part.