Acosta's point is that we really don't have media heroes like that today and I have to agree with him.
I'd suggest there's a connection between having "media heroes" and the posts about trust in media. Things have changed since the 1970s. People have a lot more options. They're less tolerant of things they don't like. They're less willing to be "lectured to" by people in the media. We can see that in the ratings for TV news. I have to wonder how much longer the networks will continue doing things like the Evening News if things continue where they are.
I really don't give a damn about what the ratings for the media that do this are--the stakes are way too high and go far beyond areas that can be covered on this Board!
The companies that do the news care a lot about the ratings, because that's how they get paid. It costs money to report news. At one time, the networks made enough money with entertainment to cover the losses of reporting the news. With the dilution of audience from broadcast TV, that's no longer the case. Walter Cronkite didn't have to compete against Fox News and the internet. In his time, CBS didn't have to compete against Netflix and streaming TV. Because of that, the news business has changed. Comparing it to how it was 50 years ago is completely obsolete.
This president and some of the people who work for him worked in the media. They know that side of the business. They know about ratings and creating "viral" content. That's what they're doing, and how they're trying to influence public opinion. They're not traditional politicians who care about public service. They're TV stars who want to get ratings, just like TV. Walter Cronkite didn't have that to deal with 50 years ago.