This is either erroneous thinking or intentionally misleading. Conflating "outlasting" with "safe" is problem number 1. Problem number two is they said "any western country" and you picked one pretty far down the list. Many western countries have a life expectancy well into the 80's so your citation only works against their argument.
it's clear that OP meant that there are no major differences in safety between Tunisia and a random western country. Meaning you don't have to worry about getting robbed or whatever more than you would in say, England.
People don't speak with exactitude, it would be weird.
