I noticed that, too. But not surprised. As I have listened for 24+ years, over the last 5 he as toned it down. And since the Sandra Fluke incident, he's been all but muzzled. Sad.
Rush seemed to change a lot after the 2012 election. He no longer talks about broadcasting until everyone agrees with him.
Instead he talks about the “low information voter.”
He has more courage than I have.