For dual citizens it’s a non-issue. For children of US citizens in Israel coming to the US for the first time, there’s some paperwork. For isntraelis with no direct link to the US there’s usually no way to get permanent residency and work permit without the usual stuff but with higher quotas. Probably they have visas on arrival with the US/Canada.
One way of thinking I guess… The other is that these people live in the imperial core and had these decisions largely thrust upon them. They’re indoctrinated. It’s a similar inclination to hating the descendants of Jews that the Nazis shipped to the burgeoning colony in Palestine in the lead up to the Holocaust. If we’re completely abandoned the idea that these people are reachable and can organize and avert the worst outcomes, then sure. I’m not so certain they’re unreachable though. A lot of them, even most of them, definitely are in my experience.