Dan Clark Audio tuned the Stealth to the Harman Target, which has been incorrectly deemed "neutral" by many, it's simply a a reference curve based on research that suits some listeners. Unfortunately audiophiles are much more finicky about sound, and one reference cannot be followed as bible. If you are a harman follower, that's awesome that you've found what suits
you the best.
I do not follow the Harman target for our headphones because I don't personally find it to sound the most natural to the experiences I've had with music, there are parts of Harman that I love and parts that don't sound right to me which varies depending on the transducer, headphone design and sources I use. Tuning and measuring headphones has nothing to do with if wood is used or not (it influences a non-frequency/distortion related area and damping factor which I do think is important), you are simply stating a preference which is totally valid and you should definitely stick with it for yourself.
Other people have different preferences based on their experiences, and you should validate those as well because your argument for transparency is moot because it directly contradicts itself, and is based on personal preference, where there is no wrong.
@AxelCloris - it might be best to move this discussion to another thread in the Members lounge or such? I don't think it has much to do with CanJam.