The story is whatever fascinates the media, who then become the story and feed the cycle.
It's great that the Harris team has managed to give them a new narrative to be fascinated by. This "happy warrior" story is working to feed the endless loop.
This is the first time the media's fascination with Trump's hold on what used to be considered normal people (which then amplifies the effect) hasn't been the focus of attention since 2019.