I lived in Greece, never wore shoes and could put out a lighting cigarette but with my bare feet without even feeling it.
In Greece, however there was no problem with coldness. I think it's quite conceivable that children move easily , if not better without shoes.
It didn't take very long at all for my feet to build up that kind of resilience, either. Roads were very rocky there too, never got a cut.
If he was accustomed to the forest floor, and they all vary depending upon type of trees, it would not have held him back for long.
Anyway, back to subject matter, just got this
https://twitter.com/WSMVHollyT/status/1328724538654339075?s=20