When creating a new user I am asked to enter their "Name", is this actually asking for a username?

I'm a bit confused at the field names used when creating a new user.

The field that asks for a "Name" should take the user's name, such as "John Smith".

I have never in my life filled out a new account form that asks for a "Name" and expects for the user to type a username instead of an actual name.

There should also be a field for a username, such as "john.smith" or "jsmith".

I also think it would be beneficial to allow users to set their email address as the username. Is there a reason this isnt the case? I understand that not everyone will agree with that, but I feel like it could be implemented and you could allow the ReadyNAS administrator to decide if they want to use usernames or emails or both.