One of the things he said is interesting:
Palestine is holy ground, a royal land, and it is not for the Palestinians only , but for all Muslims.
Which brings up two questions:
Has any Palestinian Christian leader ever expressed discomfort at being explicitly sidelined and dhimmified when Islamic Jihad and Hamas make statements like these?
Has any leftist "pro-Palestinian" group ever condemned the ambitions of Hamas and Islamic Jihad, whose clear goal is not to create an independent Palestine but to use it as a step in the creation of a pan-Muslim 'umma?
The answer to both can be found in the latter half of what the PIJ leader said:
[All Muslims] must release the land from the terrorism of the Zionist enemy.
As long as you frame your goals in terms of destroying Israel, who cares what your ultimate goal is? Because everyone can agree that the main goal is the destruction of the Jewish state, not the niggling details of what would replace it.