As an update I discovered an issue with the above instructions:
Reading the Linuxconfig instructions for the terminal method I am given the URL: https:// webmin dot linuxconfig dot org:10000/
This link did NOT work.
With the download method I am given the URL: https:// localhost:10000/
This link makes totally more sense and did work.
As a point of interest the terminal told me a completely different URL at the end of its operation. A URL that involves my unique machine name. The URL provided at the end of the terminal session also worked.
New users can’t post links. Ah, you do know this is the internet? Links are kind of its thing