Question about NutriBullet extractor

Not in my opinion. You can crush nuts or black chocolate, for example, but only when chilled. Dates have to be pitted and then frozen, then they can be crushed. The 2-stirrers are for crushing (beaters). The 4-piece stirrers are more like cutters, but the blades are blunt. For this kind of thing, there are good and cheap blenders at Galaxus with sharp blades. But the dates will always give a sticky smear without liquid and unrefrigerated.