What made it so relatable everywhere was probably how cosmopolitan it was. It was very much not an overtly American show like say, Roseanne.
I'm not especially unique in the circles I know either, I swap a lot of TV episodes with others who have home entertainment NAS systems and it's not a series that gets much discussion - it has its fans, sure .. but its not the kind of thing that broadly hits the "must watch" lists.
G20 is 85% of the world's GDP and 2/3rd of the world's entire population.
Something like 99% of HN's audience or something has to be from G20 countries.
My gut feeling is the vast majority, with a small tail of UK, other European countries, rarely Australian, and far less often "elsewhere".
There's no surprise there, HN is a US based website with a founding crowd interested in US startup funding and interests rippling outwards.
By way of example, there are many Indian coders here .. can you name the last HN front page story about an Indian "Cultural Milestone" (there has been a few). I'd assert that these are relatively rare in the non tech cultural milestone HN front page spectrum.