People won’t know where the message comes from, they’ll just hear your voice as though you were standing next to them. Everyone hears it at the same time. The message is not translated into anyone’s native language, everyone hears it exactly as you say it. The maximum length is 6 of your breaths.
It is not the tool that matters, it’s how it’s used and by who. The technological progress is inevitable, if you want to do good help guide it into the right hands in the right way. Go into making regulations instead of tech development.
Tldr
humans bad