The polls also suggest that 92 per cent of Arabs believe that Palestine is an Arab issue, not just a Palestinian issue.
I do believe that you maybe mistaken on this topic. I looked at the Doha Institute survey from 4 years ago and they did another one in 2024 and there appears to be not much difference. What you see below is from the 2024 survey and as you can see, in the case of of Saudi Arabia, only 60% said it was an Arab issue. The numbers that you see next to each country from left to right are answers to the questions below:
1) The Palestinian cause concerns all of Arabs and not only the Palestinians.
2) The Palestinian cause concerns the Palestinians only.
3) Neither of the about two statements.
Jordan 90-7-30
Algeria 89-8-30
Mauritania 89-6-30
Tunisia 86-12-1
Libya 85-9-3
Qatar 79-11-6
Iraq 75-18-7
Egypt 75-18-5
Kuwait 72-25-3
Palestine 70-26-3
Saudi Arabia 60-12-4
Sudan 68-19-5
Lebanon 61-28-7
Morocco 59-26-14