The problem is that they all hate him, but because they see that so many of their constituents love him, they don't want to go against him for fear of losing their seat come the next election cycle. They backpedal and start supporting home openly and publicly, which just creates a cycle of not holding him accountable for his actions, and further deifying him in the GOP. He's basically already the next Ronald Reagan. You better not speak badly about old Donnie, that's like speaking badly about old Ronnie. Shit, there are people who would even say Trump is better than Reagan now.
It's interesting because by doing this, they just bolster him further, meaning they'll have to deal with him even longer unless he keels over sometime soon, and by that time, then he'll have influenced enough POS politicians like MTG and they'll just pick up the mantle. If they don't like Trump and the way he handles shit, then they need to fucking say so and stick to their guns, because they are actively helping drive the GOP more and more towards that being the norm going forward.
But who the fuck am I kidding, they don't have the spine to do that, or probably even the thought process to look ahead and consider that before they decide to just bend the knee.