Where is Khurasan Actually? What role do the Taliban, Pakistan and others have?

most ahadith and history was compiled in times of abbassids we cannot pick and choose which ones are fabricated and which ones are not
abbassids are not the first muslim group to have a black flag , nor can they be the last one. So to dismiss this hadith on basis of this is coming to premature closure
But yes they did benefit from propoganda of this ahadith