Or they're just really old/uneducated and don't know better themselves.
A lot of countries have zero medical knowledge at all, and they probably still think aging is just demons and miasma taking their toll.
If educated people get so senile with age, imagine how bad uneducated people must be.
au contraire, mon ami
if you are going for an age record, at least span three centuries. Like, me, I was cleverly born in 1991, and by 2101 I'll be a 110 living fossil from before the internet