This post has gotten me thinking. Because my initial reaction to this post was kind of a visceral "uh-oh, what are we trying to defend here?"
But as I tried to sort through what you said logically, I couldn't find any argument that didn't reduce down to thoughtcrimes. It's impossible for any other person to be harmed by something you imagine.
The phrase that came to mind was "kill the priest in your head," which leads directly into the thought that the people most famous for actual sexual harm to minors are "respectable" priests and youth pastors.
And this is before taking into account the long history of accusing queer people of pedophilia and sexual predation to demonize and justify hate crimes. No one is beating the priests to death.
So this feels like a dangerous position to take. Society is so primed to act with extreme and swift violence against perceived (but not actual) pedophilia that it becomes instinctive to avoid looking like you approve of "questionable" art.
But dangerous doesn't mean incorrect. And these thought patterns remind me too much of my history having grown up in fundamentalist Christian schools and churches. "Avoiding even the appearance of evil" meant we couldn't go see movies in theaters because someone might think we were there to see something salacious. My first time in a liquor store, I felt like I crossing some kind of moral line. A woman who gave a speech in one of my college classes was judged as slutty for wearing tall black boots with her entirely modest outfit. This kind of puritanical reaction grows like a weed if you let it, and it has to be pulled out by the roots.
Anyway, thanks for posting this and indulging me working out my reaction to it in your comments section.