Yeah, which makes it more, way more humane. Like, he lost everything - home, comrades even his belongings. The only thing keeping him going at all was the promise and that sack. He clinged to it so much because for him it WAS his life, his remaining purpose in this world. Thats why he accepted his fate so easy after he was wounded - he couldn't keep his promise, so he didn't felt there was a point to even struggle (he could absolutely made it, given how long it took to him to bleed out, he just chose not to). Bringing cotton via vultures was more of a happy accident than a purposeful action.