Well, considering that most people have no idea how much technique and talent is required to play orchestral instruments within the standard (that is to say, ---steaming pile of meadow muffin--- that's either already really old or that is conservatively retro) literature, let alone non-tonal, etc, material, they certainly have no idea of the kinds of techniques involved here:
- multi-phonics
- circular breathing
- some rap machine mimicry (this last people are familiar with, alone, but not in the midst of performance of an instrument such as this)