Sorry Billy, but the man is insane, and if he considers himself an artist, then may I suggest that he try that at the prisoners exit of a courthouse.
There is no way that I would not allow anyone the freedom of self expression. While I have a moral and religious stance on the pornography industry I cannot take away the rights of an individual to engage in any way they so rationally choose in that industry as long as the participants are of age and not mentally disadvantaged. And as long as my rights not to engage in that activity is respected. Meaning that the old lady should not have been so accosted in the sanctity of her own home against her will.
If the fool decides to put on a show in private where interested individuals could have the choice of viewing the exhibition or not then I see no reason to disallow it.
Now if, art is in the eye of the artist, is your point, then I agree, as long as the beholder has their own choice on what to behold and what it's worth to behold it.