My personal feelings about regulating the volume on earbuds and earphones, I think it is a good idea, I am a grandmother of two older grandsons and when they were in high school, they would listen to their walk men with the volume so high that I could hear the music across the room. I was constantly telling them to turn the volume down, but they never listen to me at all. Sometimes I think that they have some hearing loss today, because when you speak to them they act as if they do not hear you.
Some of the problems with regulating volume control on earbuds and earphones are that many people will not take the warnings as a good thing, and they will just ignore them. They will turn the volume