As age catches up with me, I am surrounded by more and more people who have bad hearing. Some have even accused me of having poor hearing. However I maintain that those people mumble.
Nonetheless it seems a common characteristic that people with poor hearing expect others to have patience and display consideration when they cannot catch what has been said. The poor hearers, justifiably, want others to understand that they don't choose to have poor hearing and for the rest of us to repeat things clearly and most of all, with patience.