The original claim was that with go, doing certain pattern "[...] guarantees that you can never forget to validate the username through any codepath". Which is not true. It is not true, because go has its own billion-dollar-mistake called zero values.
If you go way back there was talk about that, but the discussion had long shifted to "Sometimes it's nice to work with a type system where designers of libraries can actually prevent you from writing bugs."
I get it: You were in such a rush to fill your marketing quotas that you didn't bother to read the entire thread. Maybe the lesson here is don't use HN as an advertising platform next time? You should have known better from the get go.
The original claim was that with go, doing certain pattern "[...] guarantees that you can never forget to validate the username through any codepath". Which is not true. It is not true, because go has its own billion-dollar-mistake called zero values.