I'm trying to hard to defend him here aren't I? It's not crime of the century but it is pretty grim that he's even thought to go there?
In the best case, he's a shameless liar.
But I am afraid that would be a little too optimistic.
This is often the excuse given when men say horrible things. In that thread on porn-watching men, someone said that of course men would claim to watch porn, visit strip clubs, go to prostitutes when talking to their buddies.
But of course they're lying and are totes faithful husbands!
I think it was C.S. Lewis who wrote something about cowardice wiping out all virtues / bravery being a virtue necessary in order to actually have other virtues. (At least under a dicatorship, a coward would, after all, do evil to stay safe.)
Honesty is similar. If you are a good person, but lie about it, then you cannot expect people to treat you as a good person.
I am not charitable enough to assume, when a person reveals something horrible about themselves, that they are lying.
Besides, if you are famous, you should watch what you say. That he views rape jokes as something acceptable to use for the sake of provocation, that he doesn't care what message that sends to his male fans ... that's still very bad.
(I totally get why you want to defend him. I do the same thing for my favourite male authors. It's a reflex ... and one of the reasons why I prioritize female artists now. I am fed up with having to find excuses why I still like someone's art despite the horrible things they said.)