That’s a photo of some of the cast from ‘The Young and the Restless.’ I’m not sure what that has to do with the article, though...
I think it's to illustrate people's taking pictures of themselves. It was probably chosen because it was free to use, no copyright, and included public figures.
Probably because they look nice, are doing a group selfie, and it’s a soap opera. The article is really about America becoming a collection of self-absorbed drama queens living out fantasy soap opera lives.