When people say "western" they often don't mean "western hemisphere" but the "first world". So Peru wouldn't be "western" by this definition but Australia might be.

Yeah, HN just loves the term "The West" / "Western", which weirdly includes Australia and New Zealand, but excludes Japan, South Korea, and Taiwan. (What about South Africa? Unsure.) To me, it is better to say something like "G7-like" (or OECD) nations, because that includes all highly developed nations.