If you think about it, it would be Cronkite that would be the likely one to carry the grudge, not Rather since Rather was the perp and Cronkite was the victim, so his snub of this show is a further kick in the Cronkite pants.
no no no...you are forgetting the inbred modus operandi of a liberal/socialist: always blame the other guy for your sins
More likely that Danny is sulking because he feels this show should be about him...and the realization that there likely wont be one about him in his lifetime