Artist and art: an unbreakable bond?

[heslopian]

do we see hetero's or anti gay rights morons boycotting their works with protests, of course not.

That's not necessarily true. The Laramie Project, a play about the 1998 homophobic murder of Matthew Shepard, was picketed by the notoriously anti-gay Westboro Baptist Church, who'd also picketed Shepard's funeral. Though that may have been because the play depicted the Church's funeral picket, as opposed to just its pro-gay sentiments.
I take your point, though. I'm not aware of any protests against John Water's A Dirty Shame just because Waters happens to be gay and very pro-gay rights. It was protested because it name-checked almost every weird un-Puritan fetish under the sun And nobody dug up Highsmith's anti-Semitism when The Talented Mr. Ripley was made into a film, though she was dead by then, anyway.