Is there something psychologically wrong with David Gregory? No, besides the usual superhuman vanity of a television professional. He is just not a great host of a news talk show!
From the late David Broder on down, the most powerful and influential of the great Washington columnists and journalists tend to cultivate the driest, least lively voices possible.
If some modern-day David Brock wanted to defect from the conservative movement and write a tell-all focused solely on the financial chicanery of the entire right-wing nonprofit/think tank/publishing sphere, I would read the absolute heck out of it.