I can see the advantages of this, but for me I would rather have no calls or even music.
I like to hear the sound of my board on the snow, birds singing and the wind rustling the leaves.
No calls, no thinking about anything other than what line to pick through the trees and where I might be able to air off.
What grab I might do and if I can throw a 3 or a 1 off the natural hit ahead.
One of the the things I love about boarding is everything else is put aside and I get to be focused in the moment.
Not criticizing, thats just boarding for me. Each to their own.
Then again this is the place where I do most of my riding.
Sometimes my riding partner takes a call and I tell him, turn that sh*t off.