Ignorance of Americans? I am American! I know my home country all too well. The stats don't lie: more than half of Americans aren't just overweight, they're obese. "Can't walk a mile" isn't meant to be taken literally; of course an obese person can struggle to hike a mile, but I guess I should always count on autistic HN users to take everything literally.
Wait how are people meant to interpret sweeping, quantitative statements on American capacity for exercise in the context of criticizing the reporting of a disabled man now able to walk, unaided, a moderate distance?