Similar to the love letters or whatever with N Korea, the "deal" with the Taliban was a joke. As far as they were concerned, the "deal" they were signing was the US admitting we lost the war. Why? Because we were leaving. And we were leaving despite the Taliban continuing to attack Afghan allies.
For the democracy that we installed in Afghanistan to remain, we would've had to stay there indefinitely. But at least we gave them a taste of some type of democracy... Maybe if more of them had been willing to fight against the Taliban to the death and/or their president not immediately fled the country, it could have succeeded. Idk. In any case, orderly or not, I'm glad it's over.