My personal view on this is that it’s because the soundtracks are so poorly modulated for volume that either the tv is way too loud when the action scenes/music

My personal view on this is that it’s because the soundtracks are so poorly modulated for volume that either the tv is way too loud when the action scenes/musical score happens and if you turn it down, you can’t hear when people are talking so people put their tv on a normal volume and turn cc on so they can read the 15% of the dialogue that is hard to track