If you don't want to be rude just don't comment. I don't think the author intends this to be an objective comparison by any means. It's just their subjective experience trying to build some software in different languages. See also the opening paragraph of the project's readme:

> This repository implements the same simple backend API in a variety of languages. It's just a personal project of mine to get a feel for the languages, and shouldn't be taken too seriously.