Interesting - yes my take on this is that gaming is a dissociative activity, so typically the symptoms will resolve during the activity, but afterwards will make CSS/CSS worse.
Is the implied suggestion, that, anything that is not "real" is bad? Does watching a tv show, movie or youtube video, reading a novel, or listening to podcasts of people discussing things (either fictional or "real world") have the same supposed impact? What about listening to a co-worker tell me about their weekend?
How do we define a disassociative activity?
So imo every activity can facilitate dissociation to a different degree depending on the activity and individual. Gaming, gambling, stress eating, and actual substance use out on one end of the spectrum. Hiking, gardening in the middle. And mindfulness body scans on the other end.