I suspect it isn't political but rather that being a journalist in Israel is safer than being a journalist in Syria. So naturally one will be represented more than the other. No politics there.
https://www.nytimes.com/2022/06/20/world/middleeast/palestia...
https://www.aljazeera.com/news/2023/10/30/reuters-al-jazeera...
https://reliefweb.int/report/occupied-palestinian-territory/...
The Palestinian Authority isn't a terrorist organization, but Hamas does maintain an active presence in the West Bank. The government also explicitly encourages terrorist attacks in the region through the Palestinian Authority Martyrs Fund.
https://en.wikipedia.org/wiki/List_of_journalists_killed_dur...
Doesn't change the consequence, but probably true.