"The idea that an activity, rather than a substance, can be addictive is contentious among doctors"
As a person who has been struggling with video game addiction, especially in order to combat the loneliness I have been experiencing during the pandemic, I would disagree.
While it is unlikely one would get an addiction in terms of physical dependency, psychological addiction is a whole other question.
That being said, one can also get addicted to exercise, so I guess its not a reason to keep it out of the Olympics!