Maybe I will just get another pair of NH because I don't want a different sound. I am so bored with that standard audiophile sound most go for in expensive headphones . always blows my mind they all want the headphones to match that one graph everyone always references. Harmen whatever target
I get where you're coming from, or so I think, likely you are sick of people coming in and dumping on the NightHawk, or "driveby dissing" as I call it. Sometimes I am even guilty of it and I apologize as that must make people who like the headphone feel bad. Try to remember these are not personal attacks, we are not our headphone preferences. What we like is simply what we like now, and that could change. I know with my headphone journey I have come to realize that I do like a warmer signature that does tend to align with the Harman Curve you are referring to, but I'll come back to that.
First off, you are over-simplifying quite a bit, but your frustrated I believe so that is normal when people feel annoyed they tend to blunt their messages so no worries. There is plenty of variety out there among the preferences with the "expensive headphones" (at release the NightHawk wasn't cheap although affordable for many) and there are plenty of dissenting opinions. Go into the Utopia thread and you will find people who have negative, or less positive things to say, same with pretty much any expensive headphone. There isn't some zombie like cult of conformation out there.
And to be fair, have you had enough significant, at home listening with some of these expensive headphones that you are suggesting you are bored with? If not, allow me to suggest that you might really like some of them, I would be shocked if you didn't like some of their signatures. Our preferences and understanding of what we respond to is not static, it is dynamic to an extent so experimentation and an open mind is good. Again, I realize from your comment I couldn't know if you had an open mind so I am most certainly not suggesting otherwise.
As for that Harman Curve, we should be so very appreciative that there is some actual scientific inquiry happening at a rather sophisticated level. The Harman Curve is where the consensus about what sound signature most find pleasant, it isn't meant to be completely prescriptive, nor does it suggest that everybody will prefer the signature as much. However, on average, people who are exposed to the curve tend to identify it as pleasing so that is a good thing. There are many flavours of sound signatures that are crafted from the curve, but they all deviate and differentiate themselves in ways. There is a continuum of preferences, and a great deal of variety of signatures that people respond to, the Harman Curve is simply a meta target, not a one size fits all prescription of what sounds good.
Certainly some of the traits the NH exhibits would fall upon parts of the curve so please understand the curve is not a monolithic, prescriptive formulae, it is simply a suggestion of a particular sonic balance that tends to be perceived as pleasing and listenable for the majority of the samples who have been exposed to it during experimentation. Nothing more, nothing less.