Gingrich is a paid advocate for corporate interests that benefit from the status quo. One doesn't really have an argument with a person like that. Arguments are based on principles and evidence. One simply beats, or is beaten by, such a person.
That observation sums up GOP Housemembers and Senators as well. And it suggests why the whole concept of bipartisanship is dead. And why a return of Republican governance will be a miserable experience.