The reason for choosing incomprehensible texts and not excerpts of texts that contain some meaning is to emphasize the graphic characteristics of a text and its layout in order to select them without distracting from the text.
Coupon code: 123456789
The term Lorem ipsum refers to those texts that are incomprehensible, meaning that no one can derive any logical meaning from them, and have been created with the aim of presenting to the reader only the graphic features, those of the original text.
Coupon code: 12345678
These texts usually begin with this term and are very often used in graphic design. They are usually composed of Latin words or words that resemble Latin, but texts with words from other languages are also not excluded.