Is Gary Johnson right?

In an interview this week, Libertarian presidential candidate Gary Johnson said this:

HARWOOD: Is it part of your objective to do something that sets off a chain of events that busts up the two-party system as we now know it?

JOHNSON: Maybe we're there already. I mean, maybe that's going to be the consequence of what we do — at a minimum.

HARWOOD: Let's say Hillary Clinton 's elected, and you have a solid showing. Trump loses. Where does the Republican Party go after that?

JOHNSON: This is the demise of the Republican Party. This is an opportunity, I think, for the Libertarian Party to become a major party.

Is he right?