It's not the leaving, it how it was done. I'm repeating myself her, but the missteps and many and blatant. Biden and company did the fundamentals completely backwards - removing the military before the civilians.
Any rational withdrawal would be the other way around, including leaving Bagram open and operational until the civilians were out - not abandoning it in the middle of the night without bothering to tell anyone - including our allies.
Trump had nothing to do with botched execution of the withdrawal. Biden owns this cluster
lock, stock, and barrel. The buck stops with the current administration and the related execution - Trump's been out of the loop for six months.
Biden's surrender to the Taliban - asking them nicely to let us get our people and friends out rather than telling them they damn well better let us get them out or face severe consequences - just makes it worse.