Interesting. Going back 20 years or more, I've often thought it curious that Rush -- contrary to the practice of other radiotalkers -- almost never thanks his guest hosts or even acknowledges them.
(Maybe Rush's habit may seem a bit ingracious. But then, who am I to tell him how to succeed in business?)
Well I have two major problems with that statement. First, it's false....in fact, he almost always does it after pretending his staff has made him do it. Its show craft.
But more to the point - Rush is the one DOING THE FAVOR here and the subs are GETTING THE FAVOR DONE FOR THEM. And they're paid. And they'd kill for the opportunity. It makes careers. It made Hannity's career period. Made many others...though some destroyed their own. They should THANK him (and many do in fact).