Thing is though there are a lot of rumours flying around as well as supposed leaked memo’s from US mil commanders on the ground and the state dept that show that there was real intel that the Taliban would wipe away any resistance from the ANA and capture the country pdq.A reminder to everyone that the Taliban were able to take over the entire country in slightly longer than a month (ironically like the Germans invading France in 1940), and that other killings matter, not just US troops (like the 2-3000 Afghan civilians killed every year since 2009).
This intel was either ignored or buried by the US state dept on the basis that the Doha agreement was fixed and final. The result being the absolute cluster we are seeing now at HKIA.
The US govt then decided to reassure its NATO/ISAF allies that everything was fine and under control. For this reason the NATO missions /embassies decided to keep their people in country and not commence their evac.
IMO this decision to ignore intel and not warn your so-called allies is unforgivable and as Biden is the head of the shed, this mess is on him.