But you're assuming Bundy was being honest - which given his life story is highly doubtful or at the very least calls his credibility into question.
Seeing as I didn't know the guy personally, I can only go by what I've read about him, and it didn't seem to me that he had anything to gain in his "I blame the porn, at least partially" confessions/interviews. He was simply telling us what his experience was with the stuff.
Defenders of porn don't want to grant Bundy even a shadow of a benefit of a doubt. Is porn addictive? Ask a regular user, and they'll tell you that they could give it up, any old time they wanted. But, for some strange reason, they can't imagine why they would want to do that with what they claim is a harmless pasttime.
Should I call their veracity or credibility into question the same way they do with Bundy?