don't think digs are ignored anon. I think they are suppressed.
But keep in mind - plenty of his nominees were black hats and I'm 100% sure he knew it before he put them in place. Everyone has a role - they do their one job they're hired to do and he replaces them with the next.
If he kept white hats in the chair to do the dirty work, they'd figure out the strategy pretty quick don't you think? Moves and counter moves