My mom went to a professional school for "company secretary" or something like that in the 70s and learned shorthand notation (and typing). I recall trying to learn from her books as a kid, it's not that hard.
But she never seemed to actually use it later in her life (she still touch typed tho!).
I wonder how useful shorthand is in these days when cheap recording devices are available in everyone's pocket.
Maybe people who keep hand written diaries still use it?