Out of curiosity: what features from Ruby are they reimplenting? I have no experience in Ruby but in a few other languages and framworks. And having encountered something missing yet when writing Go web services.
Rails. Features of rails.This is exactly the problem...people focus so much on the language they forget the ecosystem they're in, and the ecosystems matters a lot more than the syntax or the performance.
> And having encountered something missing yet when writing Go web services
How do you do form validations, translations, database access, migrations, email sending, background jobs that don't die on a deployment, user authentication, file uploads, caching, etc?
Of course all of this can be done, you just need to take 100 decisions and tie together 256 libraries many of them probably abandoned in a few years from now.
If you don't need any of that, then just what I said before: ok, you never needed rails from the get go.