[SahAssar]

Isn't the confusion from the difference between "Western countries" as the group of countries typically within the euro/anglosphere and "western countries" as the countries in the western part of the world? One refers to a named group (and therefore capitalized, one refers to a geographical location).

I would call New Zealand a "Western country", but not a "western country". Chile is a "western country" but probably not a "Western country" (although the map linked seems to sometimes include it).

https://en.wikipedia.org/wiki/Western_world