They do seem to be removing around 20,000 people a day already for several days. How many do they need to move. Also, if we did not have the KIA airport, how would we have transported quantities of people out to Bagram? Helicopter pick up points would have had to be arranged, not places for planes that can carry hundreds at a time like KIA.
By the time the Biden gang started to notice what was really happening, trying to defend the Kabul airport had become a lot more difficult. I am not confident that Biden really writes his own speeches, but he was using a press conference to praise his pork barrel and voter fraud bill before the bombs went off. It took 13 US service deaths to even get his attention.