Never get your mental health advice from a "technology consultant" especially one that quotes things like the DSM-5 without the required knowledge on how to apply it.
The DSM moves at a glacial pace as does many academic publications as it takes an extremely conservative approach to declaring new disorders. Most of the time it tries to classify things like "gaming addiction" under the general addiction category rather than make a new separate category for a specific form of it. Being addicted to anything including gaming is still a form of addiction and the lack of a specific category for it in the DSM doesn't mean it magically doesn't exist.
Tldr: this technology consultant is clueless about stuff outside of his field. Just because it beeps and boops doesn't make him a mental health expert on the use of it.
On the plus side it's going to keep you employed, a bit like COBOL programmers today.