mahgister, no need to apologize and please don’t mute yourself.
I am not arguing that one can not improve the acoustic properties of headphone shells, just as one can do so with a speaker. Nor am I arguing that headphones are “better” in any regard; except perhaps in the case of a particular listener who simply prefers that sonic presentation, but that is a subjective call. I am ONLY arguing, that if one can not, or does not have the inclination to treat a room to the extent that there is not a single acoustic “problem”, as perhaps you have been able to achieve, the fact that the output of a headphone driver does not interface with the room acoustic (perhaps problematical, or at least less than perfect) that this is a potential advantage. Again, only relevant if one likes the different sonic presentation that headphones provide.
You are suggesting that the space between the headphone driver and your ears, typically one inch or less and which in high quality headphones is a very controlled “environment” per the headphone’s design, can be as acoustically problematical as a typical listening room with typically problematical dimensions, problematical construction materials, furniture, glass windows, dogs 😊, …..
I’m having a little trouble with that notion. Moreover, if one gives any credence at all to the deleterious effects of acoustic borne vibrations from playback on electronics and playback gear, particularly if one listens to vinyl, that is another potential advantage. This is the reason that home recordings of any medium always sound best when the speakers are not playing while recording takes place. By extension, I think the same can be said of this potential benefit while listening on headphones.