Earlier quoted context omitted.
Not OP, but it was my impression that quality journalism was generally the case in the 1980s (in the US at least). What I was reading then certainly seemed to be. Separation of church and state was taken very seriously. These days, you can't start with the assumption that a story is written to J standards. Rather, you need to start with the assumption that it's pushing narrative, and hope to be surprised.
I think you should consider the possibility that the news wasn't necessarily any better just more people had faith in a few sources such as broadcast news and national papers, leading to less contention of the facts.
More personally, I took a J class during this period and wrote for a school newspaper. The instructor talked about J standards the way NRA instructors talk about gun safety--it was practically a religion.
These days, if you want facts, you have to plumb the cesspools of the right and the left and work it out for yourself.