Sucking cock on the silver screen

After watching Vincent Gallo sticking his all into the wet and willing mouth of Chloë Sevigny in 'The Brown Bunny' I"m confused by what all the fuss was about.

Surely cinema has, and, always will require the viewer to suspend their sense of reality? So, after an hour of film conveying the loss of Buck's (Gallo) girlfriend through physical emotion as opposed to dialogue up she pops in his motel room. Following brief conversation she's swallowing his cock for real, were lies his trick - it's for real and the audience engages in its reality. Gulping all his balls have to offer out the way leads to her gentle explanation - none of this is real, she is in fact dead.

Genius budget movie.

Link - The Brown Bunny at IMDB