Yes, playing games is fun. In no small part because they're carefully engineered to engage you, provide a path to success, and otherwise resemble a theme park experience. Even games like EVE Online that pride themselves on being massive PvP arenas are carefully tuned to make constant conflict a reality.
Not many people here know this but I have a youtube channel where I have done an absolute ton of gaming content (mostly minecraft, but perhaps most famously a Dwarf Fortress tutorial series), as a way to practice my speech and work through a very difficult stutter.
And while I still respect and root for my full time youtuber friends, for me it felt like such an emply lifestyle. Ultimately you're just walking along in other people's stories, experiencing other people's visions, and working within other people's limits was increasingly galling. And short of becoming unpaid labor for those games via their modding scenes, you are a passenger in someone else's car on someone else's map.
Like television (and probably better than television, from a cognitive perspective), gaming is a great escape. But making it more and more of your life as some of this article suggests is a recipe for gradually detaching yourself from real life, real problems and real accomplishments. It's an addictive escapism, and ever year the authors of said escapism refine their techniques in a ruthless competition to keep you captivated.
And the best minecraft fort or cleverest warframe trick I've pulled off pales in accomplishment to selling a company I built, teaching a new developer a new skill, or anything similar. The minute that gaming becomes an end until itself, you end up sliding down a slippery slope to irrelevance.