Taliban squats on suffering of afghani people and slices it’s workforce in half just because. They know the donations would come. They don’t need to do anything for the west to feel pity of this country for the years of occupation - and while Talibs don’t have anything to do with it afghani nation would be carefully supported whatever bullshit they do.
Talibs took over Afghanistan in mere days because the existing government (whatever platform they even had) was too codependent on american presence. Corrupt and weak, without any political or military might, it predictably flopped. That’s what 20 years of this ‘buildimg’ effort went up to become. There were no plan to leave, especially that fast, and as long as it existed the way it did, no one bothered to nurture afghani own political ground. And when they left, it crumbled.