This comment sounds like a design flaw and raises some questions:
1. Shall this then become a common practice to place the display name inside the comments?
2. When should the display name be used?
3. How common known this issue is and if there are any references to forther read about this issue.

So I suggest one of the following:
A) Remove the commented out display name in the example and remove this comment. As this is not that very important for this walkthrough
B) If you think this important then please reference or present the more complete issue analysis and the guidelines for when the display value is to be used or not.

Existing Wording:

Note that the display name is presented in a comment, since setting the display name would require all instances to send the display name exact as specified.