The vast majority of Afghan deaths are caused by the US illegally confiscating $9.4 billion dollars belonging to the Afghan people, contributing to a terrible famine. The cynical goal of this and the sanctions is making life so unbearable that Afghans eventually blame the Taliban for their misery.
Biden is walking a tightrope with Afghanistan, working with the World Bank and NGOs to fund humanitarian aid without directly supporting the Taliban. He's doing all he can to prevent a humanitarian catastrophe within constraints and red tape.
This could be systems failure in action. Biden's convoluted policy might backfire, straining the Afghan banking system and causing even more political and humanitarian issues. 9/11 victims deserve justice, but not from Afghan people caught between the US and the Taliban.