How in the world can you claim that France is not even 100? The German empire was established in 1857, which is definitely more than 100 years ago; it's also not unreasonable to say that the HRE could be equated to the German state, that Spain is the continuation of Castille, and that the Roman empire can be considered the direct precursor to Italy

There's a cultural through line for all these countries, often stretching back thousands of years, which means that they reach further back than the definition of the modern state

If you're gonna give them credit for stuff like that, then you need to at least give credit to the United States as far back as the Pilgrims in the 1600s.

Perhaps they referenced a source that only considers the French Fifth Republic as “France”? That would give it an age of 68.