"People who consume games" and "Gamers" are not necessarily the same group though? Just as the two groups of "people who have read a book" and "people who consider themselves A Reader of Books" both exist. The fact that there is a broader category doesn't make the narrower one useless.

From my personal experiences absolutely there is a group of people you could reasonably call "Gamers" and performing dramatic consumer entitlement is definitely part of their culture!