No, there’s definitely an element of not speaking clearly.
Matthew McConaughey and Tom Hardy as examples. Chris Nolan gets shit on for his terrible sound mixing, but him picking actors who mumble is the main issue.
Put on a movie from 1980 vs one from 2020. The voice clarity is night and day.
A lot of TV has always just been a way to fill the gaps between the adverts as cheaply as possible. Moving from 4 channels to 200 didn’t increase the amount of stuff you could watch, it just spread it all over the place.
It ate itself, streaming is going the same way. Maybe they’ll eventually catch on and have a service that contains every movie and TV show (once they’ve finished in the theatre, and past the Blu-ray/Pay-per-view part of their lifespan where people will pay for it individually), for like £30 a month, and it can be like Spotify and the other music services. A Kaleidescape for poor people. Until then I’ve gone back to mostly yarring it for any new stuff, and using a Jellyfin server.
Nobody wants a dozen services to look through, even if they did have more money than sense.
The CGI is still a bit dated (although somehow The Flash topped that), but there’s far less compositing of solo actors in green rooms, due to forced perspective.