You missed the point, John. If there were things about Trump's Afghanistan withdrawal plan that should have been changed or done better, Biden has had 8 months to change them or make them better. He has shown no reluctance to change Trump policies on other things, so he could have also changed or adjusted the Afghanistan withdrawal. He's had months and months to do this, while the Taliban had been gobbling up territory, and he did nothing.
The chaos at the airport, the failure to impede the taliban's advance on Kabul, and the loss of life are his fault.
The chaos at our southern border is also his fault.
He is incompetent.
He should resign. Kamala Harris couldn't possibly be worse.
"Don't underestimate Joe's ability to fuck things up." - Barack Obama
It was Trump's plan, thus it's Trump's fault.
You just need to accept that fact.
Trump was the most incompetent leader the world (not just the US) has ever seen, and his legacy of failure lingers on.