People post that like it's some kind of nail to be driven into a conversation; "it doesn't matter if you're offended."
The context for this was the proposal of a law that could land you in jail for blasphemous acts, even criticizing religion. It's actually a pretty nuanced opinion, in that he's saying he can't support a law that allows punishments based on subjective opinions of "offensive," but could recognize the need for some form of that legal protection.
Guess what caused him to re-evaluate his stance on the matter of blasphemous actions that he's talking about here? Being offended by something.
You don't have any right to tell somebody that they can't be offended by something. At the same time, someone who is offended doesn't have the power to make the person doing the offending stop doing that in many situations.
If anything, the people who are saying that it's not a problem are doing a worse job of defending that standpoint.