An opinion based on what fact? To develop such an opinion I would guess you would have to listen to his show for weeks because the number of callers that make it on the air isn't very high. And then after the weeks and weeks of listening that created such an opinion, I would then question then what type of superiority complex you have. Not everyone is elequent with speech when placed on the air, but from what I have heard the intelligent outnumber the not so deep thinkers.
Opinions are not necessarily based upon facts; an informed opinion may be based upon oberservations as well.