The Afghanistan exit was a completely predictable colossal failure, but it did mean we stopped lighting money on fire in Afghanistan.

Ignore that we funded the taliban and warlords for the next 50 years with 1.9 billion in vehicles, machine guns, small arms, night vision, and explosives?

I didn't ignore that. That solidly fits under "completely predictable colossal failure".

But the next 50 years of funding they received came from money we spent prior to us leaving. Certainly we could have done a better job with the withdrawal (to put it lightly), but it's nonetheless good that we aren't still spending money there.

Don't forget that before, the Talibs were seen as crazy fundamentalists and outsiders, probably called Khariji IIRC.

US bombings convinced the people to them and made them into state protecting freedom fighters, which they initially were not.

What you resist, persists. What you fight, grows stronger.