The best point I can make re the Christian whataboutism is that there are Christians in Gaza. Christian Palestinians/Arabs. They're a small minority but they are there.
Why has a Christian Arab from the Gaza Strip never blown themselves up on a bus in Israel?
They have just as much reason to hate Israel, and wish to fight Israel as the Sunni Muslim Arabs in Gaza.
Could it be because that religious doctrine and text can, and does, have real world consequences?
Religious belief can effect, and can influence, human behaviour?
Who'd have thought it.