It is not you, the sound really is getting worse

Saw Does/Ferrari in the theatre. Understood every word and I can't watch HBO without rewind and/or headphones, for "what dey say?"
Of course, it got the Oscars for sound.

When I went to see "Mother", I had the same experience.  If it were not for the fact that the movie was so beyond brilliant, I would have left over the sound quality in the theater.  It was ear shattering noise.  Maybe that was the point during some of the later scenes of war, but it was hard to handle.  I was so enticed by the visuals and the theme that I let the noise take a back seat.  

Right.  Closed caption on Hulu, Netflix etc solved all my problems.  And my popcorn is better, and less expensive.  I will never enter a theatre again.  

Movie audio is a dealbreaker. Unintelligible dialogue with juvenile sound effects. Since forever. At home with headphones is the way to watch a movie, if ever again a watchable movie should be made. A movie with no Tarantino gore, no superheroes, no zombies, no intergalactic warfare. Nor, on the other side, the standard puerile navel-gazing, however artsy or Swedish or French or Italian.

Dialogues in movies soundtracks on discs have issues. It’s a well known fact. Most people setting up their home theater systems raise the center channel by 4 to 6 dB. Even regular channels like CNN etc have to be raised accordingly. Added to the problem is the design of a lot of center channel speakers. The two midrange drivers with the tweeter in the middle is not a good design in terms of dialogue clarity. If you are into movies, you need to up the budget for the center channel speaker. I used three identical speakers for left, right and center to good effect in addition to raising the level of the center by 4 dB.