Yes, they should be afraid.

However, I fear they won't lift a finger to do anything about the monster until *after* they get all the goodies they want: the death of the ACA, the destruction of Medicare, and the theft of Social Security. 

Only then will they think about impeachment or the 25th amendment, and then they'll get the President they preferred all along, Pence.

I hope I'm wrong and that some vestige of concern for the nation will come to the fore. Perhaps their hand will yet be forced by events precipitated by President Bannon.