Oh I wouldn't ban it. I just wouldn't be interested in seeing it.
I'm not sure it can be described as "high concept" though. More like someone has simply tried to think of the most revolting thing they can imagine, and cobbled a fim around it for shock value. Its almost childish really.
In fairness, I think if you know the premise to this film (people stitched together anus-to-mouth, and shitting directly into each others mouths), its quite difficult to imagine how this can be tastefully or thoughtfully presented.
Maybe the performances are impressive though, I dunno.