Of course the news has always been partisan. They were just honest about it in the past. Look how many newspapers have Democrat or some variation of Republican in their masthead. The real scandal is the recent fiction that journalists are unbiased.

There was a time when journalism was seen as an expense in the public interest and not as a partisan entertainment profit center / propaganda outlet.

Stations that did run an editorial with a given partisan viewpoint were even required, by law, to allow an opposing view to be aired in response.