The Cliffords had many enemies, especially among the nobles themselves. That's the information I got from Charles based on the agents' observations working in the field. In fact, within Duke Conrad's Faction, they didn't lack any enemies.
There were many reasons why Earl Clifford had many enemies among the nobles, but the main cause was jealousy. The Clifford family and their cronies were often given priority in filling important positions at court and within the royal military structure. There is no particular reason for that. They are incompetent. The only reason why they could get that was because they were good lickers.
Clifford didn't hesitate to kiss the shoes of those who had power and power. This is the nature of other Nobles as well. No, I think it would be more accurate to say that this is the nature of a human being, perhaps. But Clifford is the worst embodiment of that trait, so I think they are the perfect humans to destroy.