The installation of this module via Composer is awfull

The lack of documentation on the part of the drupal community is baffling.

Here is the doc we have to make sense on how to install this module and dependencies via Composer:

Not even an example, or a little tip on how to run the command needed.

I understand that this is moving so fast that your instructions may be outdated at some point. But this is not an argument to have NOTHING.

This page is outdated and the links provided there don't apply to installing a "simple" module to your project
https://www.drupal.org/node/2627292

(sorry for the rant)