Your efforts to undermine him are IMHO more of a debclaration of your inferiority. If not a self declaration, at least your insecurity slip is showing. But that’s just me.
You nailed HumbleGunner to a ‘T’.
See, this whole ‘’Humble’’ thing in his screen name is his big ‘act’. There’s nothing humble about him. He, himself, is likely a Narcissist. He is resentful in life that people have not paid attention to him - or given him the credit and high praise that he thinks is deserving of his intellect. He is likely extraordinarily jealous of Limbaugh.
I suspect he’s a loner type...probably not well-liked, or avoided at work. Likely, he listens to Rush semi-frequently and has tried to call him - but has never made it past the screener.