This is observed mainly in people who have a weak character. Israel is rich, powerful, tyrant. Palestinians are poor, weak and victims. So for a Palestinian with a slightly weak character the Israelis are what they would wish to be. You can see the same sort of weakness in character in some Soviet citizens who despised russianness and wanted to be Americans and serve CIA. The same thing. Mainly stems from inferiority complex that sometimes leads to change of religion, change of dressing, an effort to change the accent. Some people try to climb up in social classes and they love to hate their own relatives, the same thing. Israelis call this guy a hero, well let them call a sick guy a hero.
Four Libyan soldiers said killed in battle with Islamists in Benghazi (Reuters)
from the article: Haaretz exclusive: Hamas founder's son worked for Shin Bet for years