The 8000 respondents, from 16 different countries, answered questions on what they thought about Hamas, their opinion on Iran and Western countries, and what actions were needed by Arab states.
Arabs aren’t one people. They’re many different tribes. They’ve been fighting as long as the historical record. So them not caring about the Palestinians is not surprising but obvious.
All arabs remember Jordan September 1970 so nobody trusts the Palestinians one bit and rather prefer they die against the Israeli than their own citizens. They got expelled to Lebanon after Jordan and sparked civil war there for decades and then finally getting expelled in 1991.
So if you wonder why the neighbouring Arab countries don't care. There's your answer.