I understand the point of describing sounds made by objects or people not visible in a scene, especially when they are relevant to the plot and/or make the characters react to it. A doorbell or explosion in the background, for example.
However, what is the purpose of describing obvious, mundane sounds produced by actions displayed on the screen? People with limited hearing can tell what sound is produced by watching the scene, and describing details of insignificant sounds don't mean anything to deaf people.
Doesn't this excessive ammount of unnecessary subtitles lines on the screen ruin the experience to all intended viewers?