Setting aside Arab, Iranian, Western influence and distilling the issue to bare bones we know the Jewish state was/is the source of the conflict and that is the cause of Palestinian suffering. The initial unrealistic demand was by the Jews who wanted the land for themselves. Even now "ethnic cleansing" is an unrealistic demand, the recent ground invasion was unrealistic, stopping humanitarian aid, etc. That is to say unrealistic is just a matter of perspective and at the very least we should not impose that on the victims.
I think that's what you mean by the boldened part in the quote above.
Please share what you mean by "...burnt many times via Arafat's ego..." My statement about Arafat related to his delay in agreeing to the deal. He sought broader Arab agreement. If he had signed first it would have been "a bird in the hand" type of deal.
This latest conflict is a "battle of two tails", often times it was discussed whether the US was leading Jewish state's policy or was the tail wagging the dog. It is the same for Hamas and Iran, I don't believe there is evidence Iran orchestrated or even supported the October 8th attack.
The Jewish state is not helpless to retaliate especially to this degree neither are the Americans to unconditionally support it. It's not the west bank civilians are in a bind because there is no one to help them, they are in this bind because the Jewish state is an apartheid state. Similarly Gaza is not left in ruins because of Hamas' actions. Gaza is in ruins because of the Jewish state's actions.
Whether or not the Abraham accords succeed is not guaranteed. This is opinion but based on how the UAE was treated with their "Abraham accord" and considering the Saudis want "steps" outlined for a Palestinian state and not the acknowledgement of that state by the Jewish state and US it is doubtful they will lead to anything substantial.