I think it's questionable.
I think there should be rules as to the design of the headpiece,
and that tickets should be given to any covering
that impairs visibility in any direction,
as well as the ability to properly, fully, and EASILY turn one's head
to look behind.
This woman certainly won't be playing the violin however.
I think you have a very complicated impression of this, have you ever met a woman in real life who wears this? They turn their heads and drive just fine.