English speaking countries: UK, Australia, New Zealand, USA, Canada. Last time I checked they all came from the UK so are genetically the same. So his definition is correct, friend.
Read the context, friend. The original comment this guy replied to was pointing out that people may have different traits because of their exposed environment even though they had same origins. Are we all same people since we are all homo sapiens? Is a Japanese person whose great great grandfather was an American "same people" as pure breed Japanese? What is "Same people" anyway?