I mean, it's not really surprising. Considering his position, he would have HAD to have known about a lot of the nasty things the Dominion covered up, and from there been able to infer some of the worse stuff. Using the Zerg and 'making' Kerrigan is definitely the worst of Mengsk's deeds, and the personal connection may have shaken Donny where nothing else did...but the behavior is already there. Then it just comes down to a question of 'Is he the chief propagandist because given his position trying to be like Kate would have gotten him killed quickly?' or 'Is he the chief propagandist because going along with Arcturus gives enough benefits to overwhelm his ethics?'
Considering how he stayed on the Mengsk train I'm assuming the first is not the case. But even if the price he'd sell himself out for is low, why support the old Regime when a lot of people, and most especially powerful people, clearly hated him? The only guess I can give for that, is that much like the Confederacy before them, the Dominion is a state with huge fracture lines plastered over with a logo of 'unity'. There's factions that hate being part of it, or others in it, were only around because the Brood War was terrible and they bought the lie, or genuinely loved it and dismissed or didn't care about it's negatives. And going by Davis and it's general instability...that last group is not inconsequential. Especially not considering they would have been among the planets/people reaping the benefits from exploiting the rest, and protected from the Zerg and other enemies. All told, I'm thinking Donny is very much a political animal. Maybe if Mengsk had lived for longer, he would have eventually flipped from his own grudge, but Kerrigan killed him. And there he is with a whole career supporting one political super-bloc and a whole bunch of people that still want to hear about how the old times were the best and everyone else are evil incompetents out to take their wealth/'freedom'/land. Mengsk is dead, everyone else involved in Tarsonis probably got killed or imprisoned when Valerian took power, and he still has a life to live and money to make. Of course he was going to keep being aFOX UNN news anchor. He sold out before, he'll keep doing it now (after all, unlike Mengsk, Valerian and Horner can't/won't just silence critics).
Considering how he stayed on the Mengsk train I'm assuming the first is not the case. But even if the price he'd sell himself out for is low, why support the old Regime when a lot of people, and most especially powerful people, clearly hated him? The only guess I can give for that, is that much like the Confederacy before them, the Dominion is a state with huge fracture lines plastered over with a logo of 'unity'. There's factions that hate being part of it, or others in it, were only around because the Brood War was terrible and they bought the lie, or genuinely loved it and dismissed or didn't care about it's negatives. And going by Davis and it's general instability...that last group is not inconsequential. Especially not considering they would have been among the planets/people reaping the benefits from exploiting the rest, and protected from the Zerg and other enemies. All told, I'm thinking Donny is very much a political animal. Maybe if Mengsk had lived for longer, he would have eventually flipped from his own grudge, but Kerrigan killed him. And there he is with a whole career supporting one political super-bloc and a whole bunch of people that still want to hear about how the old times were the best and everyone else are evil incompetents out to take their wealth/'freedom'/land. Mengsk is dead, everyone else involved in Tarsonis probably got killed or imprisoned when Valerian took power, and he still has a life to live and money to make. Of course he was going to keep being a