Pashtuns never had their heart in the government of Afghanistan because their allegiance was to the Taliban. So when we left, Pashtuns warmed up to the Taliban with open arms. It’s what they wanted. Other tribes weren’t in favor of their rule. But this time the Taliban have their soldiers up in the region where the Northern Alliance used to rule to prevent them from reemerging.
Yes, after the original win, our only “achievement” in Afghanistan was to dismantle the Norther Alliance. The only local force, which could stand up to the Taliban.