These days, making news more entertaining sells. This is especially true for TV news.
The camera “likes” drama better than details.
Experience has taught that faster and more dramatic talk increases audience interest and numbers.
This means that eventually news stories get shorter… making room for more fast-paced stories.
Viewers must now go to major newspapers and other media for “context” and depth.
Ultimately, anchors are selected, groomed, and often changed, based on popularity.
Other personalities also appear to help boost ratings. Many from entertainment and sports.
What once was defined as “human interest,” now evolves into end-of-program “happy talk.”
CBS Mornings move to Times Square, and the anchor’s delivery-style on NBC Nightly News are excellent places to observe how commercial temptations are changing TV news.
Larry D. Lauer 
I think a bigger issue is the way tv outlets are created to promote a particular view in words and images. Recent stories about ATT purposely financed a conservative news outlet. Once an outlet has an established viewpoint, the content in all areas is molded in that direction.