I've noticed a few errors here that could be corrected to make it clearer.
1. It appears in an earlier version of this the documentation included some suggested code to cut and paste into the Loop Output, but that code has been deleted but the instruction is still there. For example see Item 3 under the heading Step 2. "Scroll down to the Loop Output section and paste this code into the editor, replacing any code that was already there:" Note that it says paste *this* code into the editor but no code is provided. Instead it goes on to explain how to achieve it using the wizard. Item #3 should be deleted.
2. Similar problem in Step 3 ("or paste the following shortcode into the body of the page:")
3. Step 2, Item 6 Says: "On the second screen of the Loop Wizard, use the Add a field button to add the Taxonomy title and Posts List Complete the wizard by clicking Finish." It would be clearer if it made clear that "Posts List" is the *VIEW* that was created in Step 1. For example (with added language in ALL CAPS): "On the second screen of the Loop Wizard, use the Add a field button to add the FIELD Taxonomy Title and THE "Posts List" VIEW CREATED IN STEP 1. Complete the wizard by clicking finish."
My feedback: The instruction you linked to is far less helpful than the one that I had offered edits to. For the average user the one you linked to is far too general. Hope you keep the older one which lists step by step instructions.