That is one of the main reasons he is hated. You have people like Pelosi, Schumer and Nadler who have lived in Washington all their lives and have done as little as possible. Here comes Trump who has been there 3 years and has turned the political landscape on it's ear. They hate him because he calls them out on things.
How dare a non politician tell them what to do? They just want a smooth talking pussy like Obama to push around.