You can still be connected to the Internet (via an Ethernet cable), skip the connectivity step, and create a local account. So, there is a way, while connected to the Internet, according to the article you linked, to create a local account on a Windows 1809 installation if you select the correct option! I am not disputing that 1809 makes it difficult for the unsuspecting or uneducated person running the installer to create a local account, but it is most certainly possible.
From memory the OOBE I received was actually different to the one in the article, I never got the option not to connect to the internet if an ethernet cable was connected, and no, I did not miss a step.
Microsoft have made nothing 'confusing' - If you are connected to the internet while installing, which most are and in many cases you do not get a choice (bootcamp), chances are you will be forced to create a Microsoft account via the cloud based OOBE. Eventually that OOBE will be part of the default ISO OOBE. That's called manipulation, not confusion.