You know? I was mulling this around and giving it some more thought lately and I realized another aspect to why pop culture has gotten so bad.
In decades past, the writers and creators drew from their experiences, which included World War II, The Korean War, Vietnam and all sorts of other big events and used that to inform their creation of new art. Just one example is Tolkein, which drew alot from his WWII active duty experiences to inform Lord of the Rings, one of the most famous novels of all time. Director Ishiro Honda served for Japan in WWII and his experiences led to him becoming a staunch pacifist, which in turn impacted how he brought Godzilla to the screen. George Lucas was a huge film buff and history buff and pulled from all sorts of different sources to inform Star Wars, Indiana Jones, and even his more personal project, American Graffitti. Comic writer Larry Hama used his background in Martial Arts to influence the ninja characters, Snake Eyes & Storm Shadow, in the GI Joe comics.
Today's media is being created by people who have grown up in the last 30 years. They're experiences are mostly 1) 9/11, 2) Consuming Media and 3) Plugging into the internet. Even something as simple as going outside and playing is probably something a lot of these dorks can't recreate believably because they didn't experience it themselves. And its probably also why so much media is painted with such broad strokes of "These guys are bad because their racists!" and all that other jazz...because they are isolated weirdos without much real experience themselves and their world views are not formed by experiences, but by the media they consume. Even the Trump presidency, which will be remembered as a landmark event for these weirdos, is only that because they consumed enough media to get psycho levels of invested in it.
I was really thinking about this after watching The Critical Drinker's video of The Last Jedi, specifically on Admiral Holdo. He compared the issues between Holdo and Poe in that film to Hackman and Denzel's characters in Crimson Tide, and the differences in how maturely the characters are written in both films is staggering. How could these films with similar stories and situations turn out so radically different? Well one explanation is that one film (released in 1995) was probably informed by people with real life experience in tense military situations and the other (released in the late 2010s) was written by a man child who had no concept of how military situations are to be handled.