I don’t see “changing the world” as a necessarily bad ambition. If you have a goal and a plan and are willing to work hard, all the more power to you. A lot of great organization started with the urge to “change the world.”
The problem I see with these two is that they don’t see themselves as doing any work themselves or even supporting the people doing the work. They are going to “inspire.” That is truly outstanding arrogance, particularly coming from people who haven’t really done anything.