The article completely ignores domain name registration. I own a myname.com domain and email address with that domain that I use wherever I need real ID. I also maintain the home page with my latest contact methods. My contacts only need one thing to put in their address book, https://myname.com. I can move registrars easily if needed. I am also not dependent on platforms since people can always find me here if I leave a platform.
Edit: It does not completely ignore this option but frames it a bit restrictively. I set mine for auto renewal and use my domain at an email provider. It is not necessary to run your own SMTP.
Edit: It does not completely ignore this option but frames it a bit restrictively. I set mine for auto renewal and use my domain at an email provider. It is not necessary to run your own SMTP.