The idea that Grantaire offered any substantive criticisms or challenges to the Amis' ideals or methods. Sorry guys, he really is just a disruptive jackass whose knee-jerk instinct is to disparage or despair over anything in front of him. (I mean, as concerns his vaunted 'cynicism.' He's also a good friend, lively company when he doesn't have a dark cloud hanging over his head, paradoxically head-over-heels for Enjolras, etc.) Depending on the current wave of fanon, we get Cassandra!Grantaire spouting prophecies about the futility of protest (usually with the implication that he'll be totally vindicated by the events of the novel, when that's not even the point of the events of the novel), smart-aleck Grantaire speaking truth to power and keeping Enjolras on his toes with constructive criticism, or whatever the flavor of the week is... oh, fandom, no. Grantaire is none of those things. Grantaire is an exceedingly verbose drunken Eeyore.
[Dieu] entend ta voix, ô fille des hommes! aussi bien que celle des constellations; car rien n'est petit pour celui devant lequel rien n'est grand.
- George Sand, Les sept cordes de la lyre