Chase's politics were on display during the entire run of the Sopranos. The beauty of the show was that they did not hinder it nor make it great. It was superfluous, truthfully, and the genius was that any political persuasion could find something if they wished. That was his complexity (which in truth, is all of our complexities.)
If he wishes to make it so now, too bad. Because that wasn't how it came across at the time and I'm not interested in making an argument that does not exist at this late date. The finale created enough of one.