Given his background somehow doubt he is jewish, could be pro-israel. But all this could well be totally unrelated to the event itself.
Isnt it more likely that's due to him living in the US or the Terminator hypothesis?
It's possibly related to mistaken identity. There's apparently some guy with a similar name that has some tie to Israel. Articles and social just seem to be running with it without any fact checking.
Kinda crazy (scary?) how fast tragic events like this get instantly politicized on social.