I don't know if there was ever a Golden Age when journalists reported nothing but the facts.
I grew up knowing which newspaper supported which political party, in fact you could know which way a family voted by whether they were an Irish Press or and Irish Independent family, and in the evening an Evening Press or an Evening Herald family. In the past you could probably even make a good guess at their religion, if they read the Irish Times.
You knew the editorial slant, and made allowances for it; and not all stories were susceptible to editorial slant anyway.
Now that there is access to not only a whole range of news outlets, but also to authoritative, referenced research papers online, it's possible to arrive at a reasonably acceptable version of things. It's also possible to identify individual journalists who, over the years, you have assessed as being reliable.
For instance, a PP mentioned being unhappy with media coverage of climate change - fortunately, there is lots of research published online, you can check the credentials of the authors, you can crosscheck opposing views and their sources, and make your own mind up.
So we are not totally dependent on the media, or worse still Social Media, if we want to form our own opinions on contentious subjects. I still use the 'MSM' to supply me with the topics, but I rely on myself for the opinions.