Earlier quoted context omitted.
Someone who worked on a non-English environment years ago here: sometimes you do use the local language in some contexts, but, more often than not, you end up using English for the majority of stuff since it's a bit off-putting to mix another language with the English of programming languages and APIs.
Dumb question, but it would then seem that you have to know English to program??
relying on machine-translated documentation or limiting yourself to only using libraries written in your native language would be a huge impediment.