There is a lot of mumbling by actors today. I could not watch TV at all if not for captions. Background music of multiple speakers make it impossible to hear dialog. The Golden age dontcha know.
I even have to caption Game of Thrones to understand their English.
And of course modern directors think it is uber cool to shoot dialog scenes in close-ups with the actors’ faces turned from the camera so lip reading doesn’t work. And you are right about all the other audio pollution. Don’t these creative idiots watch their own product on small screens with mediocre audio before they finalize the work?