i think most people know tokio is rust (I'm not a rust dev)

It's the german word for Tokyo. There is little reason for a non-rust dev to know this other meaning.

I hate these ambigious HN vaguebait headlines and you should too.

There is little reason for a non-german to know this other meaning

Actually, that's how Tokyo is spelled in many languages besides German.

It used to be spelled Tokio in English speaking countries before the 1950s

https://english.stackexchange.com/questions/207014/why-was-t...

if an hn headline says something like "best practices for Phoenix" nobody expects it to refer to the city Phoenix, Arizona, USA. It's more likely Elixir Phoenix, the web framework. Or it could be one of a ton of other software projects called Phoenix.

this is not a problem.