[skissane]

This is part of what many people find so confusing. In most systems “role” is a group (or something closely resembling a group), not a user. The weird terminology confuses beginners

[_jhqp]

It's a bit confusing and legacy.

All roles function like you would expect groups to function

A role that is not allowed to login is a `group`.

While the CREATE USER and CREATE GROUP commands still exist, they are simply aliases for CREATE ROLE.