what do you suppose the Taliban would have done to those same people and more if the US had not pulled out when Trump told them we would?

I don't really think slowing down a pull out a few weeks or even months would really upset the Taliban anymore than what we had already done, I mean we've been there for more than a decade.

The point would be that it would have given more time for people to make their way to the airbase, and for more than just a couple airplanes full of people evacuate.

The only reason the Taliban was able to capture Kabul so quickly is because they and the security forces knew that the US wasn't providing any air cover.