Yeah, harman neutral doesn’t sound 100% natural to me either.
Neutral is really misleading – intentionally misleading – if they’re taking random people instead of musicians, who knows what X instrument sounds like, for all their tests, to decide what neutral should be like. I’m thinking it should be called harman conventional or harman consumer curve.
It’s like THD measurements for DACs and amps. It can be seen as a way to know if something went really, really went wrong.
IMO, all ears are different – literally – all pinnas and conchas etc. So you got to do your own curve.