"Porn is not harmless. But neither is it an important cause of sexual
violence or misogyny. Partisans on both sides of this debate have
littered their arguments with distortions, hyperbole and cheap
rhetorical tricks. We have to wade through a lot of bullshit to get to
the truth."
This link is to a thoughtful article on the subject from several years ago. Has the issue become clearer in recent years?