The ones that aren't cowards say many Republicans in private say they despise Trump and can't stand him, but as you said, they're too scared to say it publicly!
Especially in Congress or the media. Tucker said that he "can't stand him," that he hates him, but he's still sycophanting him like nothing else matters, and Hannity said that "He's crazy."
McConnell, Graham... that whole lot,,,