For an entertainment industry that now far surpasses and is much more involved and interactive than cinema society still has its priorities mixed up.
Yeah, people spend countless hours each day going to the cinema.. Completely apt analogy
You don't have to spend countless hours playing games to be gamer.
But a major part of the social stigma around gamers are that they spend "too much" time playing their games.
Trusts me, movie nuts are just as stigmatised. There is no double standard
But yes, you do actually have to spend "countless hours" playing games, to be a gamer, just as you have to spend countless hours on football, to be a footballer. The word is describing an above average participation.