There are no sacred cows with PJ (see, e.g., Parliament of Whores, Give War a Chance) and he's an equal opporunity skewerer calling 'em like he sees 'em - and that's why I still like him.
I've noticed a persistant phenomena too: Conservative and/or libertarian commentators, of very similar opinions to Limbaugh, but with FAR less influence and income than him (& with egos that match) tend to like to skewer Rush.
Surprise, surprise, eh?
He was funny back at the National Lampoon, I’ll say that. Jeff Greenfield, who’s now a “political commentator” (meaning leftie yes-man) also worked at NatLamp.