Of course Himes is dismissive of the concerns of republicans, because he can get away with it. The media isn't going to challenge him on it and the republicans protesting will never be heard or seen. It's very easy to attack the process because it's backward and corrupt. The democrats can just go on an have their impeachment. In the end it won't matter. Trump will still be president, the democrats will lose the house and republicans will hold the senate.