I ran multiple community teams at some point in time (NFS, Star Wars, FIFA, EA Originals, Battlefield) and not once did we pay a Game Changer to say something specific.
I've also been in meetings where Game Changers have turned around and said "this is sh*t" (direct quote). I've also had creators smash up discs on camera and send them to the office, yet are still part of things.
Like a lot of companies, creators are used in various ways but in my experience, nobody is ever paid to say something specific. It's always about using their own voice, to say what they are thinking.