Good for him!
Every popular radio talkshow throughout recorded history has the same MO: drone on and on about one topic for the entire program and only answer calls from people who happen to be making the point the host was going to make anyway.
Rush Limbaugh is particularly good at this. His so-called "open Fridays" is the most misleading crock of bull manure on the air. He starts out every "open" Friday but suggesting a topic and then magical-mystery all of his callers happen to want to talk about that very subject.
That's about as open as a constipated ant!