We are in agreement on all of that with the exception of the art itself, and as a beholder of the art in question, I'm entitled to forming an honest assessment of it.
The video was meant to provoke and push boundaries, as art often should, and I appreciate the video on that level.
I wonder at what point you would have begun to feel a similar tinge of revulsion? Clearly not at drinking from urinals. But what if they'd started flinging poo at each other? I'd think most people have a line they'd rather not be crossed or behavior they'd rather not be witness to. I'd be equally disgusted by straight men drinking from urinals. As I said, a matter of taste.