Maybe Mom’s comment should apply a couple of generations prior to her original intent - to her own mom… Some combinations just don’t work well together like an older person who may be partially deaf or have partially deaf friends and people who are unusually sensitive to sound. It’s not necessarily the “fault” of either. Ideally Mom could learn to talk more softly around her sound sensitive daughter and grandson or the ones sensitive to sound could wear sound reducing headphones when they are around a person like Mom who habitually speaks loudly. The only thing that doesn’t work well is shouting at people because you are upset. That’s something that everyone needs to work on. It certainly doesn’t help much in trying to get a loud talker to talk more quietly…