YOP,
What a load of twaddle you are putting up: I see your comment that you learnt to fly here in Australia, I wonder where you really got such a warped set of ideas regarding flying equipment?
Not every helicopter specifically needs a helmet to be worn, but a combination of task and type will dictate the overall requirement. Mustering in a Robbo, yes, joyflights no. Low level filming in a 206/350 yes, police ops in any type yes, firefighting in any type yes, and so on.
Your obsession with decrying the use of both safety equipment and your derision of those whose employment requires some form of uniform is laughable. I trust that one day you aren't exposed to an accident where the use of a helmet or the wearing of flame retardant clothing may have saved your life.