I don’t know if any/many Jews/Israelis actually celebrated, and if they did then why would that be; but the conspiratorial accusation towards Jews/Israelis in particular is that they caused or at least celebrated the attack because it would drag the US into fighting Israel’s enemies in the ME.
Separately, I could imagine [anyone who’s generally been a continual target of Islamic extremism] not exactly celebrating but (unwisely) seeing the upside “well at least now you get it”.
I don’t know if any/many Jews/Israelis actually celebrated, and if they did then why would that be; but the conspiratorial accusation towards Jews/Israelis in particular is that they caused or at least celebrated the attack because it would drag the US into fighting Israel’s enemies in the ME.
Separately, I could imagine [anyone who’s generally been a continual target of Islamic extremism] not exactly celebrating but (unwisely) seeing the upside “well at least now you get it”.