Cel Shading isn't tied to a demographic or a genre. Its a way of producing graphics. Just because some people who consider themselves 'hardcore' gamers deny themselves the chance to play good games because they have brighter graphics doesn't make them bad.
Case in point:
Dragon Quest VIII, Okami, The Legend of Zelda: The Wind Waker, Naruto: Gekito Ninja Taisen 4, etc.
A good example of Cel Shading done right











