I am not supporting what Seth MacFarlane says, but I think it was plain that his 'comedy' was precisely what was wanted--because he has been 100% consistently misogynistic in all his animated programs. One viewing of "The Family Guy" will prove it.
It's hard to fault him for putting out the product he's established and known for. It makes more sense to condemn the programmers at The Oscars who HIRED him, letting them know this sort of humour is not appreciated by at least 50% of their audience.
Men are often oblivious to what they're saying as being 'hurtful' or 'offensive'--I don't know how many times I've had to specify to MALE FRIENDS who claim they were "just kidding" how very inappropriate it is to make jokes about the sex or the bodies of women who have been assaulted/raped/attacked by other men.
One of these same guys one night pointed out a bumper sticker that was about having an Autistic child...and he said, "Shouldn't the letters in that sticker be jumbled around?" Turns out he thought it was about DYSLEXIA and when I told him that was a hateful joke either way, HE was offended I said so.