This is an inaccurate and highly reductive stereotype of what the supposed "Anglophone" cultural world believes about friendship.

In reality, there are vast cultural differences between different English speaking regions, which foreigners often overlook due to the shared language. California, New York, Miami, Johannesburg, New Zealand, and rural Yorkshire are all technically "Anglophone" in some broad reductive sense, yet are as culturally distinct (or even moreso) as, say, Sweden and Greece.