I think that this reviewer is showing his bias. As Wasterroadtree points out, palestinians in the west bank only meet Israelis in the context of the soldiers and occupiers. And the handeler in Omar is played with nuance by actor Waleed F. Zuaiter. Plenty of films privilege the remorse and emotional problems of the occupiers , see The Gatekeepers , Bethlehem,and Waltz with Bashir. Omar depicts a gritty morally complicated universe and neither sanctifies or condemns its characters.
Its a taut and engaging thriller which exists in a specific social and political context and depicts the morally corrosive
effects of occupation and the informer/ surveillance culture on all parties.