Squawk7700 if they didn't have those flights would you really consider the area to be any less noisy? You are right in the heart of the CBD, a very busy CBD with Cars, Trams, Trains, Buses and Trucks not all that far away.
If we shut down those flights would there be any real respite? or would we just be shutting down a perfectly legitimate business and find no real reward?
If the Helicopters are the problem then why are they not specifically mentioning them or targeting them? I'd suggest this is because they know they wouldn't really have a leg to stand on and that there would be some other personal interests they aren't disclosing, perhaps inregards to properties they own on the river or in the city.