This is illustrated by the statement issued today by the PFLP terror group.
The PFLP announced that "the opening of a headquarters for the Zionist embassy in the Bahraini capital, Manama, represents a state of increasing decline of the Bahraini regime" and hat continued normalization between Israel and Bahrain is "an integral part of the aggression against our people."
Has Bahrain turned anti-Palestinian? I don't see any evidence of it. But to Palestinians, if Israel gains something, then they lose - by definition.
It is a very childish way of looking at the world but it is accepted as normal, at least for Palestinians and most Arabs.
A great part of the profound changes happening in the Gulf, and the reason that the Abraham Accords are so important, is that they represent a sea change in the old zero-sum mentality, and towards a win/win culture in the UAE and Bahrain. There is no contradiction between having relations with Israel and supporting Palestinian nationalism, unless you look at everything as zero-sum - or if you view a Palestinian state not as a goal but as a means to destroy Israel.
The PFLP goes on "warn of the dangers of the Kingdom of Saudi Arabia embarking on normalization with the Zionist entity, especially since there are channels that have been opened in the sports and media fields, in addition to opening Saudi airspace for the passage of Zionist planes, which paves the way for the possibility of announcing full normalization with this entity. This would represent a major stab wound to the Palestinian cause."
If Israel wins, Palestinians lose - and vice versa. Which partially explains the celebrations and glee that accompany terror attacks that kill Jews. To Palestinians, any dead Jew is a loss for Israel and therefore a gain for Palestinians.
It is a sick mindset. And not enough people are fighting against it. Which is another reason why the Abraham Accords is so important - it introduces a different way of thinking into the Arab world, one that is attractive both because it is more optimistic but also because it is true.
It is worth mentioning that while the West generally adheres to a win/win mentality, socialists like the PFLP and those in the "progressive" Left indeed do believe in a zero-sum game - that the world has a fixed amount of resources and if the rich gain, the rest of the world inevitably loses. Simplistic and ultimately wrong zero-sum thinking is something that the far Right and far Left have in common.
It cannot be a coincidence that the main fans of zero sum thinking also happen to hate Jews. I don't know whether that is a cause or an effect, probably both, but eradicating the zero sum mentality is perhaps the best and most comprehensive way to combat antisemitism.