Thanks Bruno!
You have to remember that the purpose of this is to help get beginners, and small projects going quickly. Using this structure makes it very easy to refactor it later on to something like domain-driven development (like what you are hinting at), if needed. But in general, that is not really needed when just starting out.
That is not saying I'm not for grouping by feature, I really like it. But I don't think that is a good approach when just starting out :)