Well I'm pretty much with you, but to see the vehemence with which the pressure connection has been skewered in the past, I just wanted to be sure that I wasn't missing something.
It is possible that the 'myth' part of this is where someone gets the idea that it is the 'cushion' itself which is solely responsible for keeping the helicopter in the air in the hover, and in that case I can see why you would want to put them right.