This is part of what has made Trump so successful:
He has convinced his base (and a lot of the media) that what he says doesnt matter - lying, outrageous claims, incendiary remarks. He is schrodingers politician and his positions generally are "Whatever person X wants him to be". There is also massive dissonance on Trump "telling it like it is" - despite that NOBODY holds him to his word.
News flash:
Political party leaders who suggest succession and independence are almost always pushing Russian propaganda.
Breaking apart the US is the greatest victory that Russia (and other nations hostile to the states) they could hope to accomplish.