Claiming that something is right because it exists as it is under the current system without further justification is equally, if not more short sighted. It's where "plainspeaking" and begging the question combine into a kind of catnip for people that want reinforcement for their impulse towards the status quo. I'm not familiar with this particular quote, but I've read one of his recent books and it was full of this sort of thing.

I am not, and nor do I see the quote in question claiming that because something exists it must be right. In fact, I'm arguing against that since it is the same as saying that something being a law does not make it just.