Well, Israelis are... well... Israelis. Their heart and soul are in the right place, the problem is that they have always had an attitude of "FUCK THE RULES WE ARE DOING IT LIVE" and "who cares how it was done, it was done, and we got the results we needed right?" Which, yes, is fine, but there isn't much long-term thinking. It's all short-term all the time, at least public-facing. Remember, they had for like 70+ years an unofficial policy of just taking terrorists out back and shooting them because "why go through the wasted effort of a trial if we already know they are guilty," which, fine, I get it, but you can't be unofficially pulling that shit and then scream when lefties say you're "Immoral"
I have never seen that. I do know many Israelis had a reaction of "finally these Americans will understand what we have been dealing with with the fucking muslims". But they weren't happy like "mmm yes Americans are dead". Remember, many Jews have family (extended or direct) in NYC, and NYC is, outside of Israel, the center of Jewish life in the world. But anyone who thinks it's a Jewish/Israeli conspiracy shouldn't have kids.
The dancing Israelis' shit came directly from the father of one of the hijackers.