[tptacek]

I don't know either: https://news.ycombinator.com/item?id=38725778

The simpler, calmer point to make is: just don't non-ironically use the term "rootless cosmopolitan" on HN.

[CodeMage]

Yep. As I replied there, I appreciate both the clarification and the opportunity I've had to learn about a phrase to avoid.

[selimthegrim]

I explained more here (it was a reply to a flagged dead comment so this relink helps visibility) - https://news.ycombinator.com/item?id=38727745