That's been said about Stefani in recent VMAs, Grammys, and other places, and it came out as false every time.
At least it's actually been said of her. Other pop stars have been doomed to spend their entire careers playing second fiddle in the shadows, unfortunately.
Because stunts are what get people's attention. Gaga's stunts on top of the fact that she is a pretty good performer = extra points.
Outside of Christina messing up the words to the national anthem or falling at the Grammys, what were the performances that people talked about during the last few years? The ones with (intentional) stunts.