I don't think that quote is irrational, for basically the reasons TheOtherDave said.
I didn't claim that it's irrational. I claim that it's not orthodox rationality.
Take a quote that makes a more orthodox point: "The social sciences are largely hokum." --Sheldon Cooper
That quote is voted -2. That quote makes a point in which many members of the community believe but it doesn't make that point in a way that's interesting.
If it's worth saying, but not worth its own post, even in Discussion, it goes here.