[barryvan]

I think the point of the page was that unless the site/app/program is explicit about the language being displayed, you'll get Simplified Chinese. As HN is an English-language site, it uses the default. Similarly, your terminal doesn't prioritise Japanese over Simplified or Traditional Chinese.

By way of contrast, if you paste that into the search bar on https://yahoo.jp/ , you'll get the appropriate Japanese characters, as that site is explicitly Japanese.

[cratermoon]

Instead of explaining to me what I already know from reading the site and testing things out for myself, perhaps you could post some examples and experiences you've found.