For some reason I hadn't heard that!
FWIW I had a few informal vocal lessons and we discovered that I instinctively knew a few things to do at a microphone to achieve an affect. One was to move away from the mic to inhale. On video it looks like an expressive thing, and as you're doing it it even feels that way, but it's totally to not be heard inhaling. And the second thing I did without prompting was to sing softly, close to the mic, to achieve both volume, intimacy, and breathiness, when I wanted that.