There are many reasons why.
Currenlty there is a company using my desings, even posting photos of CIEMs that I BUILT complete with my "Wizard" moniker and advertizing them as something they created, in order to promote itself and try to increase sales.
Who is to say, they would not do the same with any graphs that I posted as well?
Futher more, there really isn't a "controlling body" over the head phone industry. There is no goverment agency that walks in and asks for calibration forms, there is no qualified/certified goverment calibration agency offering their services, and no certification requiements to be posted on the walls of the facility etc (unlike the hearing aid industry)
With that in mind, if calibration can be "willy nilly" what does a graph mean to begin with?
Beyond that, who is even to say a posted graph is really the graph that belongs to a particular head set?
People don't always "play fair" and from what my experiences have taught me, most peopld do not.
Thus this is a cicular discussion, if not a debate, and it is our policy not to engage in this activity at all.