One thing I remember from childhood is playing console games at houses of friends who owned consoles. They would be masters of the game and I would pick up a controller and from lack of experience feel completely lost and useless at the game and lose interest quickly. There's seems like there would be a self selection where those who can fall into the learned behavior of the game/reward cycle (console or phone easy access) can get lost in it for quite a time barring supervision. The study itself also mentions confounding things like higher percentage of gamers in study being male (so maybe gender plays a larger role than chance), weird memory effects like the video gamers being better for a short time at start of testing but falling off rapidly versus non gamers being able to continue at a higher level. https://jamanetwork.com/journals/jamanetworkopen/fullarticle...