The revelations from these testimonies have already exposed Biden's failures, but it's important to note that these witnesses were approved by the White House to speak to the committee. Biden put completely inexperienced State Department personnel in charge of an incredibly fragile situation — imagine what revelations would emerge if the committee was allowed to enquire about the people Biden has not approved to speak.
Recent reports have certainly cast a shadow over the Biden State Department, but it's important to remember that the plans for a troop withdrawal were established under the Trump administration. In 2020, before Biden took office, Trump made a deal with the Taliban that led to the eventual confusion during the 2021 withdrawal. This was a terrible tragedy for America, but to blame the Biden administration that was forced between a rock and a hard place is unfair.