I've worked in a voluntary capacity with sex offenders, I was abused as a child and worked at a rape crisis centre so I don't think I'm naive...
I genuinely don't believe this is true though.
It's something that person told themselves to justify their deviant behaviour.
Firstly, one man is no more likely to know 'what all men think' than you, I or anyone else on this thread. They're not telepathically connected!
Secondly, research undertaken previously has been in the ballpark of what this survey shows. So it's a horribly large percentage when you apply it to people you know...but still a minority of men.