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Regardless of what you cite there, Hamas officials have repeatedly indicated otherwise since what you cite. All documents and positions are open to amendments and additions, like Israel and territory.
Since Hamas has explicitly and repeatedly made offers of concession they should be considered rather than ignored. To ignore those overtures is both dishonest and deceptive. (This is precisely what the American media has done)
Further, are Israeli positions reconcilable with a Palestinian State? For recognition of the Palestinian people? Or, if you wish to deny these people a separate identity, then Israel has a duty to absorb these people who are living under Israeli, if indirect, authority.
What else could Hamas do? We do have to extend that license to them, or any entity. We are forced to do this for Israel. But, Palestinians, I suppose are supposed to either starve to death, or, pick the corrupt political leadership their oppressors insist upon. This IS the history of Cuba and the US before Castro. It took 50 yrs for the Platt Amendment to blow-up and Israel seems to be on a similar time schedule.