While I'm in adjacent industry (I write scripts and design for video games), I can see many factors at play.
The (western) world has had, in general, fairly good quality of life since the dawn of the internet. When the Berlin wall fell, we all kind of assumed it would be smooth sailing***. Young scriptwriters, directors and creators have lived their lives through mobile phones, online, and I think that limits the imagination. The horrors of WW1+2, Korea, Vietnam and so forth are so far in the past that their influence is not felt any longer. And the horrors of 911 are too close and raw, with no room for "legend" or myth.
Naturally, I'm not arguing that it applies to
everyone, but the lessened need for the basic struggle for survival, has given more people the opportunity to delve into other things- some might argue (without going into specifics or politics) that many current areas of 'activism' are far more ego-driven and shallow, compared to things like the movements back in the 60s (for example).
The Cult singer Ian Astbury wrote: "You have to bleed a little while you sing, lest the words don't mean a thing." A tad cheesy perhaps, but very true.
Social media and various "content generation tools" makes creators lazy. "Googling" is now regarded as legitimate "research". Standards have fallen- people now use casual, everyday language in serious articles.
At the moment, movies and TV are dominated by pretension, activism, nihilism and pessimism... but most of it seems to come from an area of shallow creativity, with zero 'joy' or playfulness. So many young writers today are full of nothing but surface-level ego. With all the shakeups in Hollywood happening (with metoo and aftershocks) it's basically pushed out all the 'old' writers (both innocent and guilty)- the ones with actual life experience to draw from. I mean... they even made SUPERMAN brooding and depressing! (I SO would have loved to see Cavill in a bright, upbeat movie.)
Current times are very much like in the early-mid 70s in terms of movies and TV. Dirty Harry movies, Inferno, Poseidon Adventure, Rosemary's Baby... all cold, gritty things (even though I love the Dirty Harry movies).
The came Lucas, Spielberg and others who first skirted the old studio system, but also made movies that were pure adventure, joy, escapism.
Look at the 80s- any child growing up then kind of expected to be nuked at any moment, which was a very real possibility. So a lot of films went for pure escapism or, when they did contain 'grit', they also had some gung-ho elements to them. What movie today has an audience yelling "YEAAAAH!!!!!" at the screen when the hero triumphs? The last time I remember that happening was when Captain America picks up Mjolnir in Avengers: Endgame.
Somewhere out there is a new George Lucas with some wacky idea that can usher in a new era of bringing the FUN back into filmed entertainment. Hopefully, there's also an Alan Ladd Jr. out there who will give that creator a chance.
For my part, I am sick to death of negativity. Anything and everything I work on has to have a 'feelgood' element to it. You can have fun in joy even in the most serious story as evident in (for eample) Tarantino's movies over Fincher's. Or shows like Firefly.
I've heard all the arguments that AI will never truly match human artistry. I don't buy them. AI doesn't have to be 100% perfect, it just has to be good enough to kill most artists' ability to make a living. That point looks inevitable to me.
I worry about AI too. I have zero interest in being entertained by something without a soul, something without a human, emotional need to tell a story. (Even when it comes to video games, I have a general dislike for "procedurally generated content".)
Recently, there was a video game released through kickstarter that apparently had some AI generated elements. Supporters of the game went ballistic, feeling as if they had been 'cheated'. My hope, a small one though it be, is that people will not be willing to pay ANYTHING for AI stuff, because they will think "It didn't cost anything to make this, so why should I pay for it" but who knows.
George Carlin said: It's not enough to play the blues, you have to know
why they need to be played.
Even when AI gets better, for it to create anything 'meaningful', it still needs guidance. And AIs are already starting to break down because they are feeding off other AI generated content, effectively in-breeding.
In my view, any creator relying on AI for their creative output is a hack and a fraud, not deserving of attention (never mind being paid for their output). (I have similar views on singers who rely on Autotune... I freakin' hate that with a passion. )
***small addendum:
I'm not advocating we go back to fearing the end of the world every day! ; )