This ball is in motion, in the air. He will not fire anybody at this time and will not telegraph future moves. The plan was shitty, a result of a combination of military, State Department and executive branch.
Obama should have been shutting down that war down after we accomplished our mission in that country of killing Osama. Trump should also have been getting us out of there (as one of the things I think he ran on back in 2016), but didn't, though had the military make plans well before he left office, though not acted on, as it would have impacted the election he lost anyway.
Biden said months ago we were pulling out and should have been getting all American civilians out starting months ago, including State Department civilians. Everybody knew this was coming. American contractors should have been getting their people out months ago, also. By this time there shouldn't have been many Americans (not in uniform) there.
I hate it, that many high level Afghani support personnel are and will be stuck. It always happens. They could have been getting them out over the last few months also, but elected to use them to the end. There should not have been that many involved, but it was part of spread the money and influence in trying to build that country more to our liking, which should not have been a goal in the first place.
There is absolutely no reason usable weapons and equipment could not have been destroyed rather than us seeing them in Taliban hands on international TV news.
Someday (hopefully sooner than later) pulling out of Iraq is going to be an equal shitshow. Turning over a country after a failed effort to transplant American ideal of what a country should be is another lesson we have not learned.