All I have heard from both sides is the adjective "botched" about the withdrawal Afghanistan. Would Trump have screwed up the withdrawal, maybe but we will never know. This lack of planning is all on President Biden. He ignored his advisors, set the date and ordered that it be done as Commander in Chief.
The Taliban inherited over a billion dollars in US weapons and more investments in infrastructure projects. About 15,000 Americans were left behind to fend for themselves. The bad news will continue for months to come. This is worse than the fall of Saigon.
As far as the 25th amendment, Mr Biden is safe. Having his replacement in office scares us all.