I like how the smallest Eurocentrism is greeted with the wagging finger to be inclusive on hackernews, while the expectation is that 50 state acronyms are well understood by any reader from Lazio, Lorraine, or Thuringia ;)
This is an english language forum, so I think quite naturally an acronym in a different language is less interpretable to english speakers globally.
GER isn’t even a valid country code so it compounds the confusion, if we are going to make a fake three-letter country code for Germany derived from English, why not do the same for significantly more obscure Switzerland?