I think the article needs a defense echo. There are no serious countermovements yet for two main reasons. The first is that this would only add energy to the movement. Right now, media blackout regarding the topic is working better than arguing. The second is that there are no real strong defenses against most of the rationales to impeach. If the media were not controlled, impeachment would have
taken place allready.
The publics ignorance is the only way that impeachment is forestalled. 
There are no cogent or valid counterarguments for most of the reasons to impeach.